Hydration on the go just got easier with our leakproof, insulated Flex Straw Cap. Add it to your favorite Wide Mouth Hydro Flask bottle to easily enjoy cold hydration anywhere.

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Flex Strap
Easy to transport and comfortable to carry.

Honeycomb™ Insulation
Insulated cap for maximum temperature retention.

Leakproof
Leakproof when closed so you can reliably sip and transport your refreshment without worry.

Easy to Clean
Removable components for easy cleaning.

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• Wide Mouth Flex Straw Cap fits all Hydro Flask Wide Mouth Bottles
• Straw is easy to trim to fit your favorite Hydro Flask
• Flex Strap is easy to transport and comfortable to carry
• Honeycomb™ Insulated cap for maximum temperature retention
• Leakproof when closed so you can reliably sip and transport your refreshment without worry
• BPA-Free & Toxin-Free
• Removable components for easy cleaning.