Backpack Ortovox Free Rider 22 blue Avabag KIT Material: Nylon Avalanche pocket: yes circumferential zip: no back protector: yes backpack volume: 22l attaching equipment: snowshoe, snowboard, helmet, poles, skis, ice ax Weight of avalanche system: 690g removable avalanche system: yes avalanche system is part of the backpack: yes Robust construction, perfect ergonomics, integrated spine protector and ultra-light avalanche system AVABAG. Even in this way one could describe in one sentence