The PhD Blender Bottle is as functional and effective as it's qulaity. For creamy lump free nutrition shakes just drop the wire ball in with your ingredients and shake. Top chefs have relied on the wire whisk for years to mix and blend their ingredients into a smooth and light consistency The Blender Ball moves freely throughout the bottle as you shake it, mixing the thickest of drinks with ease. Simply add your ingredients - shake and drink. The Blender Ball works on the same principle as a wire whisk. Made out of electro-polished surgical stainless steel, it circulates throughout the contents of the bottle as you shake it, blending the thickest ingredients with ease. Lumpy shakes and cooking mixtures are a thing of the past with the Blender Bottle. The flip cap stays where you need it, so it won’t close on your nose Large drink / pour spout – Just the right size to drink or pour out of. No plastic mixing mesh means easy to clean and empty.