LUKADO TPU Bicycle Camping Hiking Climbing Sport Hydration Water Bladder Bag,Blue Length Of Tube: Approx 100cm/39.4inch; Capacity: 2L;Product size:41x17x3cm/16.2x6.7x1.2inch Foldable design,Can be used to store water with -20 to 40 degree celsius Safety non-toxic environment,Compressive resistance to abrasion Can be put into backpack and backpack's shoulder strap Leegoal bulk packing with good quality warranty.