TLS® Blender Bottle, featuring a stainless steel ball whisk that makes short work of your mixing needs. Simply drop the ball in with your ingredients and shake. The ball is designed to stay in the bottle until you've enjoyed the contents. The Blender Bottle® is easy to clean and dishwasher safe. It has a secure screw-on lid that won't leak, and it's the perfect size for you car cup holder. It is the perfect blender!