30 liters and 1,430 grams with many practical details. The Nirvana Pro S is a high-performance functional backpack for ski touring/freeriding trips up to several days long. It features a diagonal and lateral ski carrying system as well as a snowboard carrier with an adjustable stabilizing strap to prevent your gear from slipping off your back. The special U-frame increases carrying comfort and improves load transfer with attached skis or snowboard. Muscle protection includes high-density 2-layer EVA back padding as well as the hip belt and shoulder straps, which feature a laminated stretch material cover. The back zipper opens the backpack completely, allowing generous access to the main compartment, even if your snowboard is attached to the front.