YOUR DREAM TUMBLER: Whichever way your day flows, the 40oz tumbler keeps you refreshed with fewer refills. Double wall vacuum insulation means drinks stay cold, iced, or hot for hours. It fits in any car cup holder, keeping it close to you. EARTH-FRIENDLY DURABILITY: Use non-reactive and lightweight 18/8 food-grade stainless steel which is flavor- and odor-resistant, easy to clean, and BPA-free. the durability to stand up to a lifetime of use. QUIET: The Boot softens noise when setting your tumbler on a tabletop, Our silicone boots are designed for 40oz tumblers. This case helps keep the bottle in place and protects it from dents and scuffs. EARTH-FRIENDLY DURABILITY: This travel tumbler is durable and not easy to scratch. Cleaning your tumbler and lid couldn't be easier, just pop them into the dishwasher. Our colored tumblers are powder-coated for a long-lasting finish. SUITABLE FOR GIFTS: This coffee mug is the best gift for women, men, doctor, the driver who needs to drink a certain amount of water or are not convenient to refill. It is also a great choice for Mother's Day Father's Day, Christmas, Thanksgiving Day, Easter, and so on.