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 or hot for 8 hours. ONE-HANDED DRINKING: Threadless, transparent Tritan lid easily slides open and closed for a one handed operation and helps to prevent against spills. Features a convenient drinking hole for sipping for beverage or placement for your straw. DURABLE CONSTRUCTION: Made of high quality food grade 18/8 stainless steel, double wall vacuum-sealed construction which helps to prevent condensation from foaming on the outside of the bottle. EASY TO CLEAN: Designed for easy and convenient cleaning. The Tritan lid separates into two parts making it super easy to clean. Hand Wash Recommended for body and lid CAR CUP FRIENDLY: The tumbler stands 8.58" tall and has a diameter of 3.82" which makes it size perfectly to fit in standard sized cup holders. WORRY FREE DRINKING: This tumbler is Food and Lead Safety tested plus it’s PVC, BPA, latex and phthalate-free; 30 fluid ounce capacity. SUSTAINABILITY: Every year, billions of pounds of waste ends up in the oceans, and the majority of this trash is plastic that takes thousands of years to decompose. Every BUILT reusable tumbler purchased will save you money and reduce plastic waste.