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. TempShield insulation eliminates condensation and keeps beverages cold up to 24 hours or hot up to 12 hours. Durable 18/8 Pro-Grade Stainless Steel construction. BPA-Free and Phthalate-Free.