This 24 oz. polypropylene shaker cup uses both a stir ball as well as colander strainer insert to ensure your protein comes out nice and smooth without any clumps. Also features a bottom storage compartment for your supplements, ounce and ml measurements, a wide-mouth opening for easy cleaning, integrated carry handle and a drinking spout with flip cover. BPA-free and fits most car drink holders. You can customize your logo on the body.