Reddit reviews Neolid Twizz Travel Mug with Unique Twist Leak-Proof Design - Silicone Membrane Twist Top - 12 oz Double Walled Insulated Mug - No BPA

TWIST TOP LIDLESS DESIGN - Using a silicone membrane and a revolutionary design there is no lid to this new mug. Instead, you simply twist the silicone membrane over the top of the mug and watch as the seal is formed.KEEPS IT HOT OR COLD - Each mug is can hold up to 12 oz and are double walled! Keeping drinks hot for 2 hours and keeping drinks cold for up to 6 hours!LEAK PROOF & EVEN HOLDS A STRAW IN PLACE - The silicone membrane is adjustable and can leave enough room for a straw to fit through the top. Just put the straw in the opening and twist the membrane closed until the straw in snug in place. With a new seal there will be no liquid falling out of the mug.SIMPLE TO USE - The mug is really easy to use simply twist the top membrane around and watch as a seal is quickly formed over the top of the mug.MICROWAVEABLE AND FREEZER SAFE - This mug can be reheated in the microwave and it could also used in the freezer if you are trying to cool your drink down.