The cup is designed with unique anti-twist and leak-proof design. Cup with unique anti-twist anti-leakage design, no cover silicone film twist pipette cup. A 12-ounce double-walled thermos, suitable for children, students, and office workers, no longer worry about knocking down your water glass.

• FREEZER SAFE: This mug can be it could also be used in the freezer if you are trying to cool your drink down.
• 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.
• KEEPS IT HOT OR COLD: Each mug is can hold up to 12 oz and is double walled! Keeping drinks hot for 2 hours and keeping drinks cold for up to 6 hours.
• 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.
• LEAK PROOF & EVEN HOLDS A STRAW IN PLACE: The silicone membrane is adjustable leaving enough room for a straw to fit through the top. Simply put the straw in the opening and twist the membrane closed until the straw in a snug in place. With a new seal, there will be no liquid falling out of the mug.

Specifications:

• Material: PVC.
• Capacity: 300 ml.
• Color: yellow, gray.

• Temperature resistance: -10-100 ℃.

Package Include:

• 1 x  Double Wall Tumbler.

Note:

• Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed in the pictures.