Vest design offers maximum mobility and comfort under any jersey. Pouch holds a CamelBak 72 oz. reservoir firmly on your back * Chafe-Free flat seam stitching eliminates abrasion along seams. Full zip makes it a breeze to get on. * Air Mesh insulated back panel insert keeps your back cool and comfortable while insulating the water in your reservoir * Insulated tube cover keeps water in the tube cooler and more desirable to drink. * Quickwick fabric keeps you dry and comfortable.