Geigerrig Rig Bando Hydration Pack Sprays, Filter Ready, 2 Liter (70 oz.) Hydration Engine, Reversible Dishwasher Safe Reservoir Made from heavy-duty 1680D Ballistic Nylon Diagonal pack zipper and horizontal top zipper for easy engine access Easy ride diagonal cross fit strap with terraced overlay for comfortable tube and bulb configuration Waffle padding covered in breathable mesh for comfort on strap and backplate