... , cold effectiveness longer More cheaper, Carry advantage Sanitation, FILL WATER ICEBAG -800ml Gel pack; Ice pack; Gel ... can use this Ice gel pack just after fill water and freeze.This Ice gel pack not ... can insert the water tap in the jaws to fill water, the water will not leak, then the ... and other specifications are available upon the order.Material: polyethylene, crystals FILL WATER ICEBAG -800ml