[ material]- Soft folding water bottles are made of food class TPU material. It does not contain 100 %BPA and PVC. Soft water bottle is unpleasant and environmentally friendly and can be reused and durable. .[ Easy drink]- Light tightening provides plenty of liquid, high-flow bite valve automatically closes and leaks after each bite. Our foldable water bottles are marathons, jogging, walking, bike, climbing, travel, open -air sports and so on. ideal for. .[ Capacity]- Each folding water bottle is 500 ml/40 grams/1.4 oz. Dimensions W90mm XH 260mm/W3.54 'XH10.24'. .[ Save of space]- Foldable water bottle is only 40g (1.4oz). When the working soft flask is empty, it is minimized in a minimum volume, there is no load for sports. It is very suitable for women, men and children. .[ Practical]- Nozzle foldable water bottles can be frozen and cooled throughout the night, you can easily get a refreshing beverage on a hot day. (Recommended Use Temperature: 0 - 40 ℃)