Material: TPUCapacity: 2LSize: 36*17cm/14"*7"Features: 1. High quality product， Brand new. 2. 2L Hydration Wide Mouth Water Bladder Bag-Cycling Hiking. 3. Tube connected to the bottom of the bladder. 4. Can be put into backpack and backpack's shoulder strap. 5. Can be used to store water with 10 to 50 degree celsius. 6. Foldable design， saving your pack space when not in use. 7. Suitable for camping， hiking， cycling，... etc.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.3. Water bag inside is the spiral tooth structure， to prevent leakage