This water bladder is made of food grade TPU material, which will reduce the shape as you drink, replenish water during exercise and it will not increase the carrying burden. Features: Made of fine quality TPU, safer to use. Fall resistant, not afraid of crushing. The drinking nozzle makes it more convenient to drink water, and it is equipped with a dust cover, which is more hygienic. It can be filled with boiling water at 100. The extended straw is optional and can be used as a spare straw. Specifications: Type: with Spare Extended Straw, without Spare Extended Straw(optional) Capacity: 500ml Material: TPU+PP+TPE Item size: 240 * 58 * 58mm / 9.4 * 2.3 * 2.3in Extended straw length: 275mm / 10.8in Item weight: 36g / 1.3ounce Extended straw weight: 27g / 1.0ounce Package size: 250 * 60 * 50mm / 9.8 * 2.4 * 2.0in Package weight:37g Packing List: 1 * Water Bladder 1 * Spare Extended Straw (optional)