From Manufacturer's Label:
BlenderBottle GoStak durable interlocking jars. Use as portable storage containers to carry powders, pills or snacks. Provides a simple, mess-free way to carry protein powders, meal replacement ingredients, vitamins, supplements, flavored drink mixes, energy powders, and electrolyte supplements. Will ship Black, Lime or Blue lids based on availability.
Made of durable, stain- and odor-resistant Eastman Tritan®. A unique Twist n’ Lock™ system secures the jars together with a quick twist, and a secure seal ensures worry-free portability. The inclusion of a removable carrying handle also makes it a snap to clip to a bag or purse and take anywhere. Comes with 1-150cc, 1-100cc, 1-60cc and 1-40cc, and 1-handle. BPA-free. Dishwasher safe.