1.Material: The telescopic silicone cup with straw is made of high-quality silicone, which is harmless to the human body and can be used with confidence. At the same time, it is not fragile and lighter than glass. It is easy to clean and can be washed under running water. 2. Folding Design: The telescopic silicone cup with straw adopts a foldable design and can be folded up to 13 cm. It takes up little space and is easy to carry. Let you drink water from your own cup anytime, anywhere, safer and more hygienic. 3. Leak-proof with straw: The telescopic silicone cup with straw has a dust-proof sealing cover and a straw, which can effectively prevent water leakage. You can turn the foldable travel coffee mug upside down without leaking. 4. The cup with handle is easier to hold and drink. The telescopic silicone cup with straw is the perfect choice for environmentalists who refuse to use disposable cups. 5. Continuous use: The telescopic silicone cup with a straw can be used continuously to avoid environmental pollution, and the portable folding coffee cup can be used as an office coffee cup, portable camping cup, and travel cup. Telescopic Silicone Cup With Straw With Dust Cover Outdoor Travel Portable Folding Water Cup 550ml Product material: silicone Capacity: 550ml Size: 9.8*7.1*22.7CM Folded height 13.4cm Weight: 155G Product Include: 1 x Folding Cup caution: 1. Please cook for a few minutes before using it for the first time. 2. Use caution when shaking with hot liquid. 3. Please use soft material to clean the cup to prevent damage. Tip: Before folding the cup, keep the drinking hole open. Press the cup without hesitation to fold it easily.