Product 1.Small Size The silicone material of collapsible travel cup is light and strong. When you are outdoor camping, hiking or travelling, the small Collapsible cup is good choice. 2.Safe Material Food Grade SiliconeOur collapsible travel cup made of food grades silicone, No BPA. It added a anti-scald ring for safety. Besides. It is easy to clean, no smell, durable, flexible & reusable. Safe and healthy for the whole family. It`s safer and larger than similar products in the market. 3.Awesome DesignSpace saving and only small when collapsed, takes up no space, ideal for outdoor hiking, camping, travel, and sport events. Also perfect using in office as coffee cup. 4.Sturdy Base and Drink EasyWith the sturdy base the coffee cup is not easy to tip over. This reusable mug can drink directly or insert a straw according your preference. 5.Using TipsFirst, please make sure the lid and hole are totally sealed after the cup is full of drinks. Second, don't put the cup in your backpack when the cup is full of drinks, because vigorous shaking may lead to loosening of the plug.