MAMMUT (Mammut), a Swiss outdoor brand, "Nirvana" series 25L This series is a highly functional model designed for snow activities such as skiing and snowboarding, and for use in the backcountry. Uses: Free riding, backcountry, snowboarding, skiing. Features: Jacket carrying system, helmet carry, and full access function that allows access to the main compartment from the back. Thank you for viewing.