· SEAL IT IN: Leak-proof lid (when closed) for on-the-go convenience· FOR THE LONG HAUL: THERMALOCK double-wall stainless steel insulation keeps drinks hot up to 9 hours or cold up to 21· LEND A HAND: One-handed drinking with no lids or caps to remove or misplace· GET A GRIP: Subtly textured grip with updated fluid movement for a secure hold on the go· PERFECT FIT: Fits most car cup holders· EASY CLEANUP: Top rack dishwasher-safe lid, handwash body· PEACE OF MIND: Limited lifetime guarantee