Hydroflask Hydration Flask 21oz Standard Mouth with Flex Straw Cap

Flip it and sip it.

A cupholder-compatible water bottle with leakproof Flex Straw Cap—easy to fill, easy to drink. Open it up, add your ice, and flip to sip. The insulated stainless steel keeps it cold for up to 24 hours.

• 24 hours cold, 12 hours hot
• TempShield®️ double-wall vacuum insulation
• Dishwasher safe
• Leakproof when closed
• Pure taste, no flavour transfer
• Fits most cupholders
• 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 freezer

Size & Dimensions