Patented pull-tab lid makes this travel mug 100% leak-proof;Vacuum-insulated technology means that this stainless steel mug keeps beverages hot for up to 4 hours and cold for up to 12 hours;Patented carry clip on the handle allows you to take this travel mug wherever you go; Attach it to a bag strap for hands-free portability;Textured grips make the Extreme Mug easy to carry and hold;Does not contain rubber or latex; Made from 100% FDA-approved materials;Clean Up?- Top rack dishwasher safe lid, hand wash body;Lifetime Warranty