Air flow channels Single hand adjust loop Alloy support frame Ergonomic padded hip belt 3D Airmesh Adjustable back length Excel® 210D ripstop Nylon lightweight, strong and durable f10 active trekking Air flow channels Single hand adjust loop Alloy support frame Ergonomic padded hip belt 3D Airmesh Adjustable back length Excel 420D Cationic fabric lightweight and extremely durable Duraflex® buckles Strong and reliable Hydration compatible fits a hydration reservoir Protex® 4:2 fabric extra strong and durable AirMesh on rucksack straps allows air to flow, keeping the user cool A1 back system featured on Pinnacle, F10 PCT & F10 TMB day travel A1 back system featured on Pinnacle, F10 PCT & F10 TMB Protex® 4:2 fabric extra strong and durable SBS® zips high quality, durable zips Pro-weave side pockets highly durable, yet extremely flexible material AirMesh on rucksack straps allows air to flow, keeping the user cool