Never Spill Your Drinks Again!

Do you want to replace your traditional mug? Are you always spilling your coffee? Our TWISTER Tumbler is designed with unique anti-twist and leak-proof design. Simply put the straw in the opening and twist the membrane closed until the straw in a snug in place. No longer worry about knocking down your water glass. Suitable for children, students, and office workers.

Features:

• LEAKPROOF & 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 the snug in place. With a new seal, there will be no liquid falling out of the mug.
  
  
• 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.
  
  
• COVERLESS SEAL DESIGN: The silicon film of the cup is fixed on the ring to rotate, connect the cup and tighten the seal when the ring rotates. Comfortable grip, ergonomic bottle design for a comfortable grip.
  
  
• KEEPS DRINKS HOT OR COLD: Each mug is can hold up to 10 oz and is double-walled! Keeping drinks hot for 2 hours and keeping drinks cold for up to 6 hours. Can be heated in the microwave.
  
  
• 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.