Description Keep life moving with our 21 oz bottle and Standard Flex Cap. It stashes easily into a small shoulder bag, your pack’s side pocket, or your car cup holder, and holds enough ice cold goodness to keep you going for hours without weighing you down. No wonder it's one of our bestselling water bottles. Features Versatile, middle-of-the-road size TempShield™ insulation eliminates condensation and keeps beverages cold up to 24 hours and hot up to 12 hours Durable 18/8 Pro-Grade Stainless Steel construction BPA-Free and Phthalate-Free Compatible with Standard Mouth Insulated Sport Cap Lifetime Warranty Specifications Capacity: 621 ml Weight: 320 g   TempShield™ Our unique double wall vacuum insulation protects temperature for hours. Cold drinks stay icy cold and hot drinks stay piping hot so you can stay refreshed for any adventure. Hydro Flask Vacuum Insulated Flask Standard Mouth 21OZ