How to Use: Firstly, move the white PP ring; Secondly,open the lid on the white cap (top on the mug) ; Third,pull up the mug bottom,so the mug body can stand up; Fourth,open the cap on the top of the mug; Fifth,cover the mug with the white PP ring,so you will not scalded by the hot water. At last, when you want to fold it after drinking, please keep the lid on the cap open,remove the white PP ring, then push it harder from the bottom and restore the parts. Item Name: 350ml Collapsible Silicone Cup Material: FDA approved silicone + food grade PP Capacity: 350ml / 11.9 oz Net Weight: 140g Color: green Descriptions: ?This is a healthy and safe glass. Produced with food grade safety silicone. Excellent, elegant, practical design. Facilitates the transport of people And suitable for outdoor use, travel, meeting it is also used as a practical glass at home Because it is made of soft silicone and don't worry about it breaking. ?The cup can be folded and adjusted. When folded, the height is only 6 cm. You can even put it in a pocket. ?When you expand it, it can hold 300-350ml of water, and our designer is specially designed, with anti-heat handle and leak-proof cover. In short, it is a perfect mug.