Designed with equal parts style, innovation, and versatility, the Blender Bottle Sportmixer rises to the challenge of your active and busy lifestyle, redefining what it means to be a “water bottle.” Say 'goodbye' to lumpy protein shakes and 'hello' to smooth, great tasting drinks. Our patented mixing system uses the Blender Ball wire whisk found only in Blender Bottle brand shaker cups to mix even the thickest ingredients as you shake. Sportmixer Blender Bottle, BPA and Phthalate free with Blender Ball wire whisk, Sportgrip and Sport Loop. Stain and odor resistant.