Your perfect travel companion. Keep life moving with our 21 oz bottle and Standard Flex Cap. It stashes easily into a small shoulder bag, your packs 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. Product Benefits Versatile, middle-of-the-road size TempShieldTM 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 Volume: 621 ml (21 oz) Mouth Diameter; 1.91" Diameter: 2.87" Height: 9.4" Weight: 11.3 oz