Keep life moving with the Hydro Flask 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 Hydro Flasks bestselling water bottles.

FeaturesVersatile, middle-of-the-road sizeTempShield™ insulation eliminates condensation and keeps beverages cold up to 24 hours and hot up to 12 hoursDurable 18/8 Pro-Grade Stainless Steel constructionBPA-Free and Phthalate-FreeCompatible with Standard Mouth Insulated Sport CapLifetime Warranty