The Contigo Huron Snapseal Travel Mug keeps your drinks hot up to 6 hours or cold up to 12 hours thanks to its Thermalock double-wall vacuum insulation. The one-piece lid allows for one-handed drinking with no lids or caps to remove, and is completely leak-proof when closed. Features: Leak-proof lid (when closed) for on-the-go convenience Double-wall stainless steel insulation keeps drinks hot up to 6 hours or cold up to 12 One-handed drinking with no lids or caps to remove or misplace Fits car cup holders and under most single-serve brewers Top rack dishwasher-safe lid, handwash body.