Plastic Stirring Ball,protein Whisk Shaker Ball Sports Drink Protein Bottle Vibrating Ball (7pcs) 4 blue - 3 purple

1.Easy to Use: Just put the shaker ball in the bottle, shake the bottle fully, and you can get a mixed drink2.Perfect Size: The blender ball , perfectly matching the shaker cup, and suitable for most bottles3.Material:Protein mixer is made of food-grade PP, which is safer4.Easy to Clean :The vibrating ball is easy to clean,just rinse it with water or put it in the dishwasher