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

Features:

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