The GNC Blender Bottle® Classic™ is a 28oz sealable high-quality container that allows you to take your protein shakes on the go. This gym mixer bottle comes with a BlenderBall®, a wire whisk that makes your beverage as smooth as possible. The screw-on lid has a StayOpen™ flip cap, so you can easily take a drink when you need to, but you don’t have to worry about the bottle leaking when it’s firmly sealed. Use the adjustable carry loop to attach your protein mixer bottle to your backpack, and clip your keys onto it during your workout. The GNC shaker bottle is BPA- and phthalate-free.