The 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.
Not intended for use with hot liquids. Hot or warm liquids (and other ingredients such as soda, etc.) may cause pressure to build up within the bottle and cause the flip top to open unexpectedly and spray contents. Always open flip top with caution.