Your Favorite Nutrition Company has teamed up with your favorite shaker Company – The BlenderBottle® Classic is the #1 best-selling shaker cup for a reason – it works. The patented BlenderBall® wire whisk is like having a little ninja bottled in your shaker cup, cutting up lumps of dry protein, and making them a thing of tomorrow. 28oz. Bottle BlenderBall® whisk inside Embossed ounce and milliliter markings Wide mouth makes it easy to add ingredients Secure screw-on lid stay open flip cap™ won’t close on your nose GripperBars™ makes it easy to hold Large drink/pour spout Easy to clean—dishwasher safe Fits in most car drink holders BPA-free.