The 30 oz. Stainless Steel Insulated Tumbler and Lid together make an ideal solution for anyone with an on-the-go lifestyle who likes to stay hydrated. The stainless-steel tumbler has double wall vacuum insulation that seals in temperature to keep drinks hot for up to 6 hours, iced for an impressive 24 hours, and it retains cold for an incredible 60 hours! The lid features an air tight seal, straw-friendly, and made of BPA-Free crystal clear plastic that allows you to see how much beverage you have. 2-Piece set includes the 30 oz. Stainless Steel Double Vacuum Insulated Tumbler Bottle and 30 oz. lid. Narrower bottle design fits most cup holders. No sweat tumbler exterior stays dry, so you wonÌ_Ì_åÈt need a coaster. Strong and reliable, the tumbler is made of 18/8 stainless steel construction.