environmentally friendly freeride backpack by mammut. the nirvana 18 is a compact freeride backpack with extensive features and a great fit. the recycled main material complements the backpack’s fashionable design elements. a cool design and environmentally friendly production – what more could a nature-loving free-rider want? the backpack also features full rear access and a jacket carrying system, making it a comfortable, perfect companion for off-piste terrain.