The EVOC Zip-On ABS Pro 20L Backpack is a smaller touring pack attachment designed for the base unit of the ABS® Vario range. This pack provides you with enough space to be comfortable during an outdoor day long trip. Some of it's features include a quick access compartment for emergency plan, attachment system for skis, snowboard, snowshoes, 1 ice pick, multi functional webbing loops, and 3 liter hydration system compatibility.