100% LEAKPROOF: Thanks to Snapseal technology, the thermos tumbler can be opened and closed with one hand; slide the lid up to drink, slide it down to lock the travel mug COLD OR HOT: Vacuum-insulated double-wall thermos mug maintains drinks hot for up to 7 hours or cold for up to 12 hours, whether on the go, at the office, or at home ROBUST & HIGH-QUALITY: Insulated coffee mug with a plastic lid and vacuum-insulated stainless steel body; the leak-proof construction keeps drinks safely inside the tumbler EFFORTLESS CLEANING: The dishwasher-safe lid opens completely for easy cleaning (no misplaced parts), and the stainless steel tumbler can be hand-washed. ON THE GO: The thermos tumbler allows users to conveniently open and close it with one hand and fits in most car cup holders. Size 8.3 x 8 x 18.3 cm, capacity 470 ml, weight 296 g