Adult Flip Spout Straw Top
Compatible with Bigfoot, Boss, Boulder, and Summit bottles.
The included straw is cut to fit our tallest Eco Vessel bottle. A ruler is included with the names and sizes of Eco Vessel bottles clearly marked, so you can easily find your model and use scissors to cut the length you need. We suggest you err on the side of cutting a little longer, as you can always trim more, if needed.