Accessory – Designed for the newest Hydro Flask Wide Mouth Bottles and include a flip straw cap and 2 straws that can be cut to accommodate various bottle sizes. Note that the Hydro Straw lid does not fit on the older style Wide Mouth flasks.
This BPA-Free and Toxin-Free Wide Mouth cap delivers a high-flow rate, and has a durable rubber coating to withstand bite marks. A convenient finger loop makes it easy to clip your bottle on to backpacks, strollers, bikes, or to carry when on the go.
To make sure your Hydro Flask Wide Mouth bottle fits this cap, please click here for a PDF Size Guide
To customize the straw size, simply cut the straw to fit the Hydro Flask bottles
For the 18 ounce bottles, remove 21/2 inches from the end of the straw.
For the 32 ounce bottles, remove 1 1/2 inches from the end of the straw.
For the 40 ounce bottles, remove ¾ of an inch from the end of the straw.
For the 64 ounce bottles, remove a tiny bit from the end of the straw.
The Straw Lid is top-rack dishwasher safe and is backed by our lifetime warranty.
Please note that the Wide Mouth Straw Lid is not leak proof.