GREAT FOR HOT AND COLD: The double-wall construction ensures both hot or cold drinks can be kept at optimum temperature for longer. It can keep your drinks cold for 24 hours and hot for 8 hours. VERSATILE DRINKING: Leakproof threaded Tritan lid features a flip-up drinking tab that doubles as an ideal spot to place a straw. Wide mouth opening great for adding ice. DURABLE CONSTRUCTION: Made of high quality food grade 18/8 stainless steel, double wall vacuum-sealed construction which helps to prevent condensation from forming on the outside of the tumbler. Features a silicone rubber grip that is comfortable to hold. EASY TO CLEAN DESIGN: Super easy to clean lid is made from one part; top rack dishwasher safe lid, hand wash body. CAR CUP FRIENDLY: The tumbler stands 8.5" tall and has a diameter of 3.85", which makes it sized perfectly to fit in standard cup holders.