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

• Leakproof when closed
• Straw is easy to trim to fit your favorite Hydro Flask
• Flex Strap is easy to transport and comfortable to carry
• Insulated for maximum temperature retention
• Removable components for easy cleaning
• BPA-Free
• Dishwasher safe
• Not intended for use with hot liquids

Will my Bottle fit the Wide Mouth Flex Straw Cap?

The Wide Mouth Flex Straw Cap is designed to fit the threading of all our Wide Mouth bottles, regardless of size. The straw is long enough to reach the bottom of all our Wide Mouth bottles except the 40 oz Lightweight Trail Series Wide Mouth bottle.

If you do use the Flex Straw Cap with the Trail Series 40 oz, the last bit of beverage may not be reachable with the straw, which really, is just a reminder to refill.

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