BlenderBottle GoStak Portable Stackable Containers: * Assorted jar sizes: 150cc, 100cc, and 40cc capacities * Great for protein powders, vitamins and pills, supplements, travel items, snacks and much more * Twist n" Lock system secures jars together with ease * Secure seal for worry-free portability * Removable carry handle included * Durable Eastman Tritan material resists stains and odors * Mix and match sizes to fit your needs; fits inside BlenderBottle shaker cups