Cover almost any glass with the first ever universal beverage cap. The Cool Cap was originally invented as an alternative to plastic tumblers and will fit most regular drinking glasses.
It has three underside rings that stretch to fit all cups from 2.75 – 3.75 inches. Made from 100% non-toxic food-grade silicone, it allows you to create a spill resistant cup out of almost anything you already have in the house. Take your drinks, juices and smoothies in the car, the pool, to the soccer game, and keep at your computer or bedside to prevent spills! It keeps beverages carbonated longer and even keeps drinks cold longer in the sun (silicone is non-reactive and does not retain heat or cold like metal).
**Cool Caps and Cool Straws sold separately**