Built from entirely biodegradable materials & designed to replace single-use polystyrene foam coolers, Igloo’s Recool Compostable Cooler gives you 11.36-liter & up to 75 pounds carrying capacity in a cooler made of recycled paper and AKD (Alkyl ketene dimer), a natural component that waxes and binds the paper pulp for stability and waterproofing. It retains ice for up to 12 hours and water for up to 5 days; and it can be reused—simply empty the water and air dry the cooler.