Features Enter your model number to make sure this fits. nylon Design promotes stability by wrapping around the body and pulling the mass close N210r-HT fabric is lightweight, durable, and coated to resist water and stains Mesh back panel is hydrophobic and promotes air flow. Foam offers comfort and reduces heat build up Monofilament mesh exterior / Spacermesh interior on shoulder straps dries quickly and offers ventilation Highly air permeable shoulder straps use Aeroform monofilament mesh and Spacermesh HD promotes air flow and comfort Description Product Description FEATURES of the Arcteryx Chilcotin 12 Pack Design promotes stability by wrapping around the body and pulling the mass close N210r-HT fabric is lightweight, durable, and coated to resist water and stains Mesh back panel is hydrophobic and promotes air flow. Foam offers comfort and reduces heat build up Monofilament mesh exterior / Spacermesh interior on shoulder straps dries quickly and offers ventilation Highly air permeable shoulder straps use Aeroform monofilament mesh and Spacermesh HD promotes air flow and comfort Frame sheet keeps the back panel flat when overloaded for better stability Main compartment plus a security pocket with key clip and two Wingman hip belt pockets 2L source Widepac closure bladder inhibits mould growth and cleans easily, BPA free Lockable bite valve Bite valve docking station mounted on shoulder strap keeps it clean and secure External attachment straps carry wet gear, helmets, trekking poles, etc Reflective tabs add visibility in low light situations