This is the full Y MountainLine 40 Daypack including full Safeback SBX avalanche rig in the custom designed lid. Safeback SBX is patented technology designed to continuously retrieve fresh air from the snowpack surrounding the user's backpack, delivering it up to their breathing area. This supplies them with fresh air to inhale and pushes the CO2 they exhale away from their face. The pack itself is an advanced, lightweight and robust all-mountain pack designed with a special attention towards versatility and adaptability. In our research for this pack several experienced mountaineers told us that they didn't need another item in their already vast collection of daypacks. They wanted one pack that worked for all their mountain activities - all year round. So, we made Y MountainLine 40 Daypack! An item you can tailor to adapt any adventure in any condition. Customize it to a light, small and fast pack or a fully rigged avalanche pack with the SBX Technology. It may look simple on the o