Precison Spout: Our snap spout helps prevent spillage, It's fast and neatShaker is marked to 20 ounces on the side and fits 28 ounces to the brimLid: Engineered to get a tight closure every time to prevent leakage Accurate Increments: Measurements are marked in both ounces and milliliters for accuracy Built for Speed: Base fits most cup holders The MusclePharm Shaker is essential for mixing your supplement powders. You don't have to worry about leaks or clumpy drinks anymore! It's made in the USA so you know it's good quality! The shaker is marked to 20 ounces on the side and fits 28 ounces to the brim.