The 21 oz bottle and Standard Flex Cap 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. More hydration for more fun with our leakproof. Our 21 oz Standard Mouth is just the right size for staying hydrated before, during and after activity. Beverages stay cold for 24 hours and hot for up to 12 hours. Key Features: - 24 hours cold, 12 hours hot - TempShield double-wall vacuum insulation - Leakproof when closed - Pure taste, no flavor transfer - Durable stainless steel - Fits most cupholders - BPA-Free - Dishwasher safe Important Notes: - Not for use on a stove, in a microwave or freezer - Keep hot liquids out of the reach of children This reusable, refillable 21 oz Standard Mouth insulated water bottle is crafted from stainless steel, is cupholder compatible, and fits right in your pack. It keeps cold drinks cold for 24 hours and hot drinks hot for up to 12 hours, providing enough hydration for hours of enjoyment.