【Shaking Bottles】a plastic stirrer easy to shake and mix-21 oz (about 500 ml)you can easily shake and mix anything you want including protein powder supplements milkshakes smoothies etc
【Product Configuration】This Cups is Safe-use a leak-proof sealed flip coverequipped with an interlocking device locking Flip top With Time Scale,Shaker Ball,Straws,The perfect fitness cup
【Easy to use】easily open the automatic flip with one hand,press the bottom to unlock and start drinking.The liquid measurement on the side of each bottle is molded so that anyone can easily record the amount of liquid you drink each time.
【Safety and Environmental Protection】Made with BPA-free and Phthalate-free plastic,these shaker bottles dish-washer-safe and environment-friendly.