Now you can make your food storage easier than ever with this convenient set of containers with locking lids. Microwave and freezer safe, they're perfect for fruits, vegetables, leftovers and more. The 18-piece set includes different sizes and shapes – each with a secure, lock-on lid to keep your food fresh and spill-proof. Plastic. Set includes 3 square (16, 32 and 54 oz.), 3 rectangle (14, 37 and 76 oz.) and 3 round (12, 24 and 42 oz). Largest is approx. 9"L x 6"W x 4"H.