The Nirvana 15L Backpack is Mammut's smallest ski pack that's still geared for backcountry touring. Its 15L capacity still has enough room for the avalanche gear required for backcountry travel, as well as other pockets for goggles, a hydration reservoir, and more. Mammut also added external attachments for skis and a helmet. Most of this backpack is made out of recycled material for sustainable efforts, and EVA padding covers the back panel and shoulder straps for a comfy tour.