Tranquility Bottles GO Bottle, 16 Oz Stainless Steel Thermal Commuter Mug, Blue 100% LEAK-PROOF GUARANTEE Shake it, Rattle it, Flip it, Spin it the GO Bottle won't leak or spill! ENGINEERED FOR MAXIMUM INSULATION- Best in class design means your drink stays hot/cold longer! VERSATILE DESIGN- Stylish enough for the office, durable enough for the rugged adventures of life! AEROSPACE GRADE STAINLESS STEEL- We use 304-grade S.S. the same material as the Space Shuttle! EASY TO CLEAN- Old Coffee Stinks! Our Lid Fully Disassembles, Just Rinse with Warm Soapy Water! Thermal Commuter Mug features Leak-Proof design, EZ-Flo spout, Easy-Clean lid, Sleek, Unbreakable, Vacuum-Insulated Thermos Bottle Keeps Coffee or Tea Hot for up to 10 hours and Ice Cubes for 24 hours