Strauss Automatic Shaker Bottle, 600ml MATERIAL: It is made of good grade Acrylic plastic, BPA free and durable in use. FEATURES: The powerful motor and leak proof lid is great for the office, travel, home and gym. Fill mixer with desired liquid. Push button and allow tornado to form. Add other ingredients to the Vortex. Portable Mixer for instant mixing. FOR ATHLETES Pre & Post Workout Nutrition, Mixes Instantly, Increased, Absorption, Portable