20-ounce capacity (note: measurements only go to 17 ounces) shaker cup for mixing protein shakes, smoothies, and supplements
Patented mixing system uses 316 surgical-grade stainless steel BlenderBall wire whisk found only in BlenderBottle brand shaker bottles
Foldaway loop for portability without bulk, and a firm, feel-good textured grip; made of stain and odor resistant durable Eastman Tritan plastic
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