BlenderBottle Classic - 28 ozThe BlenderBottle Classic is the #1 best selling shaker cup for a reason it works. The patented BlenderBall wire whisk whips around inside the bottle as you shake, mixing even the thickest ingredients with ease. Features BlenderBall whisk inside Embossed ounce and milliliter markings Wide mouth makes it easy to add ingredients Secure screw on lid StayOpen flip cap won't close on your nose GripperBars make it easy to hold Large drink pour spout Easy to