Features of the Thule Men's AllTrail X 15L Backpack Constructed with 50% Recycled waxed polyester canvas that is 5x stronger and 3x more water resistant than traditional waxed cotton canvas Quickly access snacks or keys in the shoulder strap stretch pocket Stabilize load with adjustable, removable sternum strap and tuckaway hipbelt Easily secure hiking poles or ice axe on attachment loop Stay cool on any adventure with a breathable backpanel Keep hydrated with a reservoir sleeve and two side water bottle pockets lash gear to the outside of the pack with side compression straps and daisy chains Store snacks and small Items in zippered lid pocket