Product DetailSafe non-toxic TPU material.Compressive resistance to abrasion.Tube connected to the bottom of the bladder.Can be put into backpack and backpack's shoulder strap.Can be used to store water with -20 to 50 degree Celsius.Foldable design， easy to carry.Note:1.Before filling the bag， clean it with dish washing soap and water.2.Please do not fill milk， juice or wine into the bag， these drinks may do damage to the bag.Specification:Color: Military greenVolume: 3 LMaterial: Transparent TPUTube length: about 100cmBag size: 52.5 * 18.5cm， thickness 0.4mmPackage Included:1X Bicycle Mouth Water Bladder Bag