The straw lid fits the 12 oz., 16 oz., 18 oz., 32 oz., 40 oz. and 64 oz. wide mouth Hydro Flasks
Like all Hydro Flask products, the straw lid is both bpa and toxin free
The Hydro Flask straw lid is an easy to use flip straw designed with a high-flow rate and a durable rubber coating to withstand bite marks
It comes with two separate straws that can be cut to fit your wide mouth Hydro Flasks
Straw cut guide: Remove 2.5" off the straw on the 18 oz. wide, 1.5" on the 32 oz.