Your shakes are safe here; The Shake & Go™ Fit Mixer bottle is 100% percent leak-proof—no more messes in mixing or carrying. It has a rounded bottom and weighted shaker ball that are smartly engineered to work together to help reduce the clumps and build-up that are common in other bottles. Volume markings allow for easy measuring and a convenient handle makes it easy to carry on-the-go. Engineered for easier mixing and cleaning, its design combines attractive aesthetics with convenient features for those who see nutrition as a way of life. The bottle and lid are BPA-free and top-rack dishwasher safe for a convenient, complete clean. Fits most cup holders.