Hydration Bladder Backpack,DB11218,made of 600x600D Polyester,Suitable for cycling drinking. Item Name:Hydration Bladder BackpackItem No.:DB11218Material:600x600D PolyesterDimension:50x(26+ ... adjustable shoulder strap.3.Suitable for 2.5~3.0L hydration bladders.4.With a left pocket available,nylon zipper ... 7 days7.Production lead time:40days8.Certificate of origin:available. Hydration Bladder Backpack