5PCS Protein Shaker Cup With Built-In Stirring Ball, 400ml/13.53 Ounce Capacity, Suitable For Shaking Before Exercise. This Best Shaker Cup Features A Classic Ring Top And Stainless Steel Stirring Ball/Egg Beater Ball. Kitchen Water Bottle, Pre-Exercise Protein Shaker Cup Stirrer, Kitchen Water Bottle, Water Cup. 5PCS Random Colors, No Repeats.