• Keeps drinks cold for 24 hours and hot for 12 hours

• TempShield™ double-wall vacuum insulation

• Leakproof when closed

• Pure taste with no flavor transfer

• Fits most cup holders

• Durable stainless steel

• BPA-free

• Dishwasher safe

• Flex Straw Cap not intended for use with hot liquids

• Not for use on a stove, in a microwave, or in a freezer

Flip it and sip it. Flip it and sip it with the Hydro Flask 21 oz Standard Mouth Bottle with Flex Straw Cap. With a comfortable, flexible handle, the closeable, leakproof straw cap is easy to open and close with one hand for on-demand hydration. Double-wall insulation keeps drinks cold for up to 24 hours for cool refreshment. The slim design fits most cup holders and is dishwasher safe.