This rolltop, waterproof, lightweight and bounce-free backpack is perfect for winter conditions. The Hajker 30 is compressible, Thermo Cell insulated and equipped with the No Dancing Monkey harness system. A stretchable chest strap expands during physical exertion, allowing for a tight and compliant fit. Ergonomically designed shoulder straps comfortably distribute pack weight over the shoulders. Insulated Thermo Cell shoulder straps encapsulates heat from physical activity to prevent the drink tube from freezing in even the most extreme winter conditions. Additional shoulder strap pockets make great storage for storing additional drinks, foods and gels. 30 liters of storage. Waterproof rolltop main compartment opening keeps gear dry and safe. Multi-adjustable back panel supports individual fit and pack sizing while in use. Detachable waist support belt secures the lower part of the pack.. Waist support belt can also be used on its own as a hip pack. Super ventilated back panel. Hydration compatible (not included). Insulated bladder sleeve to accommodate hydration packs (max. 3 liters). Outside compression system for a slim profile. 2x zippered water-resistant side pockets. 2x quick stash side pockets. Waterproof and zippered Passport/ID pocket. Helmet carry system (detachable stash carrier). Carbon Black