SUPERIOR THERMAL PERFORMANCE: With vacuum insulated double walls, drinks stay hot for 4 hours, cold for 6 hours, and iced for up to 20 hours. Available in 12oz, 16oz, and 20oz to make the last sip of water, coffee, or tea as good as the first. PORTABILITY REDEFINED: Optimized for your commute, the AeroLight Transit Bottle is the ultimate travel companion. It’s made with Stanley’s featherweight spun-steel technology, making it 33% lighter than our standard stainless steel drinkware NO MORE LEAKS: You’ll love the locking, drink-through lid that keeps leaks at bay. Looking for a stainless steel water bottle to keep by your side as you drive? The slim profile slips into most car cup holders to keep you hydrated on the road. SAME LEGENDARY DURABILITY: Discover next-level portability with iconic Stanley ruggedness. This vacuum insulated coffee tumbler is made of dishwasher-safe, BPA-free, 18/8 stainless steel; the same material used on our legendary mugs. LIFETIME WARRANTY: Over 100 years in the making, Stanley products epitomize decades upon decades of reliability; legendary quality that is backed by a lifetime warranty. Go ahead, get a life-proof travel bottle you can count on.