cleaning brush safety and healthy drinking material: bpa free and food grade plastics are safe to be used with hot and cold beverages. Compatible brand bottles: fits hydro flask, klean kanteen, simply simily, simple modern, swig savvy and other brand wide mouth bottles. Straw cut guide: cut 2.5' off the straw on the 18 oz water bottle, cut 1.5' on 32 oz water bottle, just cut a hair on the 40 oz water bottle, and cut one inch off for the. This will be one of your coolest purchases ever. Order now to get your vanteen straw lid before this amazing deal evaporates!