Stackable, interlocking containers for carrying Healthy Snacks, Powder, Fruits and Drinks at home or on the go. Includes 4 containers: (1) 5 oz jar, (1) 6 oz jar, (1) 9 oz jar, and (1) 11 oz jar. Twist Lock system connects containers of any size in any order; with the silicon ring inside, Airtight and Leak-proof; Removable carry handle for easy carrying or clipping to bag. Premium Eastman Tritan plastic material is stain and odor-resistant; BPA and phthalate-free; Dishwasher freezer and microwave safe. Perfect gift for Christmas, birthdays, father's day, mother's day, graduation, back to school and more (U.S. and International Patents Pending) SELEWARE Portable Stackable Food Storage Containers for Snacks Formula Powder and Drinks Twist Lock System Airtight Leak-proof BPA and Phthalate Free 4 Piece Jars 31oz Blue