Built to stay Cold 36+ hours, and HOT 13+ hours. Extensively tested against 50+ leading brands in 24-hour and 48-hour tests. Whether you're going to the gym for your next workout or going on your next adventure, the coldest bottle is your go-to. Keeps drinks Cold 36+ hours and Hot 13+ hours Leakproof Triple Insulated Stainless Steel Color: purple glitter New 40oz