Genuine. BPA Free. Blenderball. Mixes As You Shake: Our proprietary mixing system utilizes the Blenderball wire whisk - found only in Blenderbottle brand shaker cups - to deliver smooth shakes in seconds. No batteries, no cord, no hassle. Stain & odor resistant. Eastman Tritan plastic. Leak proof guarantee. Sportloop for easy carrying. Dishwasher safe. Blenderball mixes as shake. Phone: 801-235-9448. Available Monday-Friday 8:00am - 5:00 pm MT. blenderbottle.com. Facebook. Instagram. Twitter. YouTube. Designed in the USA. Made in China.