Petromax Cooler Backpack 27 Litre (olive)Convenient on the go: Ice cooled food and drinks for up to 8 days The Petromax Cooling Backpack 27 liters keeps your food and drinks fresh on the go for up to 8 days thanks to the power independent cooling with ice cubes. With a capacity of 15 kg or 27 l, you can be independent outdoors and self sufficient as you are not dependent on electricity. The comfortable back padding, chest strap and individually adjustable shoulder straps make it comfortable