The STD MOUTH FLEX 21 (621ML) from Hydro Flask is your perfect on-the-go companion for hectic days.
With TempShield™ protection, it keeps drinks cool for up to 24 hours and retains heat for up to 12 hours. Crafted from 18/8 Stainless Steel and BPA-Free.
Easy to carry in small bags, backpack side pockets, and most cup holders.
