Less luggage, more Adventure: What really comes along when camping
Less luggage, more Adventure: Which camping gear really proves its worth on the road? Jörg shares his personal experiences and...
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Chilled food and drinks for 12 days without electricity
Whether balcony, festival or wilderness
Wide range of accessories for limitless application possibilities

Experience 12 days of intense Adventure without electricity. Whether camping, on the boat, or in your own garden, your drinks and food stay cool for up to 12 days. Extremely durable, versatile, and perfect for on the go. Cold drinks whenever and wherever you want – with no compromises.
Cool for days without electricity - the KX25/ KX50 cool box is ideal for adventures in the great outdoors and for use at home. The ultra-passive cooling system is powered solely by commercially available ice or ice packs. The double-walled and cavity-insulated cool box keeps ice cold for up to 12 days without a compressor or absorber! The spacious interior of 25 or 50 liters offers enough space for everything you need - from whole crates of drinks to fresh vegetables and meat. Whether for shopping or longer trips, the Petromax cool box ensures that you always have enough cool supplies. A convenient drain valve facilitates the emptying of melt water and enables easy cleaning, while the sturdy construction ensures durability and safety. Additional cut-outs for straps or ropes also enable secure fastening during transportation. Whether barbecuing in the park, camping, at a festival, fishing or as a smart outdoor refrigerator on the terrace - the Petromax cool box is your versatile companion. It is quiet, requires no electricity and also functions as a practical seat so that you can enjoy nature to the full without having to do without cool drinks or food.
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Cool Box including Seat Cushion
Keep cool for days without power: The Petromax cool box KX25 or KX50 is perfect for Abenteuer in nature and use at home. The ultra-passive cooling system operates solely with regular ice or cooling packs. Without any compressor or absorber, the double-walled and cavity-insulated cool box keeps ice cold for up to 12 days.Depending on the model, the interior offers 25 or 50 liters of space, providing plenty of room for drinks, fresh vegetables, meat, and other supplies. Whether shopping or on longer trips, the Petromax cool box ensures that food and drinks stay reliably chilled.The integrated drain valve makes it easy to remove meltwater and clean afterward. The robust construction ensures stability and durability. Cutouts for straps or ropes also allow secure fastening during transport.Whether grilling in the park, camping, at festivals, fishing, or as a practical outdoor refrigerator on the terrace: the Petromax cool box is a versatile companion. It operates silently, requires no power, and thanks to its sturdy design, can also be used as a Seat Cushion.Seat Cushion includedThe matching Petromax Seat Cushion turns the cool box into a comfortable seat on the go. The permanently elastic foam, durable ripstop fabric, and non-slip bottom provide comfort and secure grip. The 4-point snap button system allows the Seat Cushion to be quickly attached and removed.
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The Petromax Cool Boxes are perfect for cozy days in your own garden. With their clever insulation system, featuring wall thicknesses up to 6.5 cm, they keep your drinks and snacks cool without any electricity – the perfect mini fridge for the garden! Starting at a capacity of 50 liters, they even offer enough space for a whole crate of drinks, fresh vegetables, and much more. Thanks to the convenient drain valve, you can easily release meltwater, and the sturdy construction allows you to use the Cool Box as an extra seat at garden parties.
For passionate anglers, the Petromax Cool Boxes are an indispensable companion. Their ultra-sturdy construction ensures durability and safety on the boat, while the additional cutouts for tie-down straps allow for secure fastening. Whether it's freshly caught fish or provisions for the day – the Cool Box keeps everything perfectly chilled, even in rough conditions on the water. This way, you can fully focus on your fishing experience!
The Petromax coolers are your best friend on camping trips, festivals, and road trips. With their ability to keep cool for up to 12 days without power, you’re completely independent and can focus on the important things in life. With a capacity of 25 or 50 liters, they offer enough space for everything you need, and the ergonomic design makes transport super easy. Easy to clean and extremely durable, the coolers are the perfect addition to any outdoor adventure.
Complement your cooling products with the versatile Petromax cool packs and ensure long-lasting freshness on the go. Whether in cool boxes, cool bags or cool backpacks - the precisely fitting dimensions allow an optimal integration into all Petromax cooling products.Thanks to the well thought-out design with cut-outs in the 140 mm and 210 mm sizes, the batteries remain dimensionally stable. Deformations, which can occur with conventional cool packs, can thus be avoided in the long term. This makes them particularly robust and durable.The ice packs are a space-saving alternative to ice: they do not produce any melting water as is the case when using ice and reliably ensure cool drinks and fresh food. Perfect for camping or outdoor adventures.The appealing design with high-quality workmanship and prominent logo makes the ice packs the ideal accessory for all fans of quality and style. Supplement your cooling and stay flexible - no matter where you are.
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The Petromax insert basket enables separate storage of sensitive foods such as fresh fruit and vegetables. It fits perfectly on the inner rim of the cool box and creates an additional temperature layer. With the insert basket, your provisions are always ready to hand and clearly sorted. Thanks to the water-repellent coating, it is easy to clean and remains visually appealing. Food should be hygienically packed and stored without contact in the drying basket. The Petromax insert basket is available in two sizes and can be used in both the kx50 and the kx75. It is an accessory module that allows you to adapt your passive cooling system to your personal needs. Scope of delivery 1 x Petromax insert basket for Petromax cool box
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Cutting and Dividing Board Cooler
Plastic cutting board that also serves as a divider for the cooler and as a serving boardThe Petromax cutting and divider board for the cooler has several functions to combine cooking and nature in the outdoor kitchen: Whether at the campfire, in the camper or van, on the countertop in the kitchen or placed on the cooler -the cutting and dividing board cuts a fine figure everywhere. Your cutting board becomes the place to use for regional delicacies and exotic foods while you prepare to cook.The board is made of high quality plastic and provides the foundation to productively start your cooking adventure outdoors. When you pull out the cutting board along with Petromax knives, you can get right into the mood for your dish. The cutting and separating board offers you the best conditions. The drainage channel catches the fruit juice as well as meat juice or fat, so that everything is collected in the recess. There you can also treat yourself to something hearty! Your base or camping table always stays clean, and at the end of your preparation work you can simply pour away the liquid.Keep food and drinks separate in the coolerThe cutting and separating board was specially developed for the cooler You simply push it into the corresponding recess in the middle of the box by using the handle. Just as quickly you take it out and it becomes a cutting board. In the cooler, it serves as a divider that separates different foods or drinks. This way you can keep track of everything and create order. This allows you to close the cooler more quickly so that the cold is optimally preserved.
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Extra grip for every adventure: The adhesive pad for the Petromax cool boxWith the self-adhesive adhesive pad you not only effectively protect your cool box from scratches and bumps, but also provide more grip at the same time. The thin-layer coating made of synthetic foam is perfectly matched to the surface shape of the ultra-passive cooling system. The dense material forms a robust protective layer that defies wind and weather. This means you and your cool box benefit from special protection against moisture, UV radiation and the effects of temperature. Even if you've been knee-deep in action outside: coarse dirt can be easily removed by brushing or wiping. The anti-slip pad can be fitted in just a few steps and immediately gives you more grip for your individual adventures!The lashing points are recessed into the pad, so you can still secure your ultra-passive cooling system during transport. The additional cover is available in two colors and two designs. Freely selectable in brown or gray - either with line structure and Petromax lettering or with traditional dragon logo: You alone decide what your next nature experience will look like. Non-slip stand or comfortable seat? No, because with functional Petromax accessories you remain flexible. The mounted Adhesive Pad can be combined with the Seat Cushion for the Petromax Cool Box kx25 and gives you the necessary space. How toattach the Adhesive Cover correctly:1. Make sure that the lid surface is free of dirt before attaching it by cleaning it thoroughly with water and commercially available detergent. Then wipe it dry with a cloth. 2. remove the adhesive film on the back, hold the adhesive pad directly over the cool box lid and align it centrally. 3. if the position is correct, start on one side of the lid and place the edge of the adhesive overlay flush with it. Do not press down yet, otherwise you will not be able to correct the position! You can now slowly follow the rest of the support surface until it lies completely on the cool box. 4. if all the edges fit snugly, you can now press the adhesive pad down firmly with the palms of your hands.
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Lock Plate with bottle opener cooler
Securely lock the Petromax cooler and conveniently open beverage bottles: The lock plate with integrated bottle opener offers you a practical double function during your outdoor adventures. The stainless steel accessory fits exactly to the position of the lower locking plate of your Petromax cooler and is simply exchanged for it. In this way, you can continue to lock your provisions securely against unauthorized access and at the same time open beverage bottles with a standard crown cap. The lock plate with bottle opener is universal and therefore suitable for all Petromax coolers. Add a clever accessory to your ultra-passive cooling system and prepare yourself for upcoming adventures in nature.
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For relaxing outdoor breaks - The Petromax seat cushion for the coolerWith the seat cushion for the compact Petromax cooler, you can turn your ultra-passive cooling system into a resting place to take along. The cushion core made of permanently elastic foam forms the decisive basis for relaxation in nature. It ensures ideal pressure distribution under load and thus a comfortable sitting feeling. The seat cushion is covered with robust ripstop fabric (thickness 600D). This means that it can withstand frequent use and remains particularly resistant to dirt. Traces of use such as mud can be easily brushed off, and heavily dried spots can be removed with a damp cloth.The special mesh fabric on the underside of the seat cushion forms a strong anti-slip coating. It gives the cushion support and creates you a firm seat at the camp. At the same time, it promotes air circulation and thus ideal drying after a rain shower. Dragon strong and tasty round the seat cushion by the logo embroidery on the top.Convenient at the touch of a button - push button system for your cooler seat cushionAbout the practical 4-point push button system you are a quick attachment and detachment of the seat cushion enabled. The matching counterparts for mounting on the cooler lid are included in the delivery and you only need to mount them before the first use.So equipped it goes on hot-cold expeditions and adventure vacations with the guys!With functional Petromax accessories you stay flexible: The seat cushion with push button system can be combined with the adhesive pad for the Petromax cooler
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Cooler box closures (2 pieces) spare part
This is what makes the latches for the Petromax coolers easy-to-install replacement parts: Replacement part: for the coolers kx25, kx50, and kx75 Opening and closing the lid: flexible yet durable silicone latches Easy installation: thanks to the detailed instructions, the latches can be installed within minutes Low effort: can be installed with common household tools Non-slip: secure grip even with wet hands and operable with one hand Perfect for the car, camping, and trips: replacement parts for the coolersWith Petromax coolers, your provisions stay well chilled even on multi-day outdoor adventures thanks to the passive cooling system. The latches ensure secure storage of food in the kx25, kx50, and kx75 boxes; they are flexible and durable, allowing you to easily open and close the lid. You can operate the latches with one hand—they’re non-slip and open even if your fingers are still wet from washing dishes.Easy installation of the latchesCommon household tools help you install the latches, and a detailed, illustrated manual ensures you can attach the replacement parts within minutes. Of course, you can install just one latch and save the other for later. The latches are the easy-to-install replacement parts for every Petromax cooler. Set of 2 pieces.
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Additional security for quiet nights under the open skyWith the lock holder Petromax offers you a useful accessory to secure your ultra-passive cooling system. It allows you to securely attach your cooler to a tree near your camp or to the bumper of your pickup truck, effectively protecting it from theft. Insert and connectYou simply insert the safety clip made of robust and 4 mm thick stainless steel into the handle of your Petromax cooler from above. As soon as you close the box, the lock bracket locks automatically. Thus, it can no longer be removed from the outside and makes it possible for you to additionally secure your Petromax cooler with a chain and a lock. This way you can sleep peacefully when your provisions are outside your tent or when you leave for an exploration tour. If you don't need the lock holder to secure it, it will help you - thanks to the integrated bottle opener - as a reliable means against adventure thirst.Made in Germany.
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A passive Cool Box, often also called a Cool Box without power, is an insulated container that keeps food and drinks cool without relying on an external power source.
The principle is quite simple! Before use, the Cool Box is filled with cooling packs or ice cubes. These ensure a low internal temperature, which is maintained as long as possible thanks to the high-quality insulation of the box. Passive Cool Boxes are the perfect companions for anyone who values flexibility and independence, whether camping, picnicking, or enjoying other outdoor activities.
A passive Cool Box is basically an insulated container designed to keep the temperature inside stable. It works based on the following principles:
Insulation: The walls of a passive Cool Box consist of one or more layers of insulating materials, such as polyurethane or styrofoam. These materials are poor conductors of heat and effectively prevent heat from entering the Cool Box from outside or cold from escaping from inside.
Cooling packs or ice: Before you fill the Cool Box, you place cooling packs or ice inside. These serve as a source of cold and lower the temperature inside the box.
Heat exchange: The cold from the cooling packs is slowly transferred to the food and drinks. At the same time, heat from outside tries to penetrate the Cool Box. The insulation significantly slows down this process, so the contents stay cool for a longer period.
Phase change: When ice melts, it absorbs heat from the surroundings. This phase change from ice to water binds heat and helps keep the temperature inside the Cool Box low.
Simply put – a passive Cool Box works like a thermos flask, just for larger quantities. The insulation keeps the cold in and the heat out, so your food and drinks stay fresh longer!
The choice between passive and active cooling depends on your individual needs. Passive coolers like those from Petromax offer you complete independence from the power grid and are ideal for remote campsites. They operate completely silently and only require ice or cooling packs as an energy source.
Active coolers, on the other hand, provide constant temperatures but require a power source. For a detailed comparison of all systems, we recommend our guide on active vs. passive coolers.
Passive coolers are known for their ease of use and versatility. Unlike electric coolers, they don’t require a power connection, making them usable anywhere. The high-quality insulating materials they’re made from ensure that the cold is retained for as long as possible. Additionally, passive coolers are sturdy and durable, able to withstand tougher conditions. Another advantage is their light weight, which makes transport much easier.
Proper care significantly extends the lifespan of your Cool Box. Basically, you should thoroughly clean the box after each use with warm water and mild dish soap. The convenient drain valve makes it easier to empty meltwater and allows for simple cleaning.
Make sure to clean all corners and edges and let the box dry completely before storing it. For a detailed guide on optimal care, we recommend our guide on Cleaning & caring for your Cool Box.
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Independence from the power grid
Passive cool boxes offer you absolute flexibility when camping in remote areas without a power connection. The ultra-passive cooling system is operated exclusively with commercially available ice or cold packs – completely without a compressor or absorber. This way you remain independent and can also choose the most remote locations for your outdoor adventures.
Robustness for outdoor use
The robust Petromax cool boxes are specially developed for demanding road trips and camping tours. Made of high-quality PE material and with an ultra-stable design, they defy all adversities in the long term. The double-walled, cavity-insulated construction ensures durability even under the toughest conditions.
Reliable cooling
Petromax cool boxes are considered particularly reliable as they maintain constant temperatures over long periods of time. The sophisticated insulation system keeps ice chilled for up to 12 days and ensures that your food and drinks always maintain the perfect temperature.
Versatile application possibilities
From day trips to multi-day camping tours, these cool boxes offer countless application possibilities. Whether at a barbecue in the park, at a festival, fishing or as a smart outdoor refrigerator on the terrace – they are your versatile companion for every adventure.
Needs analysis
The required capacity depends on the number of people and the duration of the stay. For a weekend for two, a smaller cool box is often sufficient, while multi-day group trips require more storage space for food and drinks.
Understanding size classes
Petromax cool boxes are available in various sizes – from the compact KX25 with 25 liters to the generous KX50 with 50 liters capacity. Each size is optimally tailored to different camping scenarios: The KX25 is perfect for day trips or short trips, while the KX50 offers enough space for beverage crates as well as fresh vegetables and meat.
Optimizing space distribution
The optimal ratio between cooling space and space for cold packs is crucial for maximum efficiency. Plan about 20–30 % of the volume for cold packs or ice to achieve the best possible cooling performance. This leaves enough room for your food and drinks.
Transport aspects
The capacity directly affects weight and transportability. Additional recesses for straps or ropes allow for secure fastening during transport, so that your cool box remains safely stowed even on bumpy journeys.
Understanding performance parameters
The cooling performance is influenced by several factors – the ambient temperature plays the largest role. Under optimal conditions, Petromax cool boxes can keep ice frozen for up to 12 days. The higher the outside temperature, the more the passive cooling system is stressed.
Estimating cooling duration realistically
In practice, food and drinks remain reliably chilled for 3 to 12 days – depending on the ambient temperature. On very hot days, the cooling time is shortened, while cooler weather prolongs the efficiency of the passive insulation.
Insulation techniques
The double-walled, cavity-insulated design ensures optimal passive cooling. This construction minimizes heat exchange and keeps the internal temperature constant – completely without electricity.
Temperature management
With a few simple measures, you can significantly improve the cooling performance: Open the box as rarely as possible, place it in the shade and use sufficient cold packs or ice. An integrated drain valve makes it easier to empty meltwater and contributes to a uniform temperature inside.
Housing materials
High-quality PE materials and the ultra-stable design ensure exceptional robustness and optimal insulation. The passive cool box was specially developed for extreme outdoor conditions and maintains its shape and functionality even after intensive use.
Additional equipment
The practical features make every Petromax cool box a true multi-talent:
Quality features
Petromax cool boxes impress with durability, functionality and versatility. They are not only reliable cooling systems but also practical seats. Their quiet operation without power consumption makes them the perfect companion for nature-loving adventurers who don't want to compromise on cooling.
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