HOT SHOT CAP: 100% leakproof so carry it with confidence. Half twist until it clicks, then sip from any side. The 1 inch of FATLID Insulation keeps your drink piping hot 18/8 STAINLESS STEEL: Puncture- and rust-resistant thanks to its kitchen-grade stainless steel construction NO SWEAT DESIGN: Prevents condensation, keeping hands dry DISHWASHER SAFE: Because no one needs more work to do DOUBLE-WALL VACUUM INSULATION: Keeps hot drinks hot (or cold drinks cold) until the last sip