The Patent Pending Popper/Aroma Topper turns your popper bottle into a 1-handed, flip top. No more slippery, 2 handed battle with the bottle! In the past getting the bottle open takes 2 hands, keeping track of the removable cap is always a challenge and then actually screwing the cap back on, all while you have more important things to focus on! With the Toppers just use your thumb to click it open and closed for a tight seal. Helps prevent spilling, staining and waste. They fit most traditional popper bottles.