TWISTGO Portable Double Insulation Travel Twist CupEnjoy Your Drinks Anywhere, Anytime with the TWISTGO Portable Twist Cup! "It is very good and the liquid does not come out, you catch the trick to open it and close it properly. The product came as described, easy to use! Will buy another one!" Bernadette Convenient On The Go Drinking A lidless design with an adjustable silicone membrane allows for a straw to be inserted, ensuring no leaks. Twist top membrane forms a seal without a lid, making it easy