Durable nesting food storage set has high-quality pourable lids with sealing sliding openings to ensure your food stays fresh longer. Plastic. 6 x 3½ x 8 holds 48oz, 6 x 3 x 7 holds 32oz, 5 x 2½ x 6½ holds 24 oz, 4½ x 2¼ x 5¾ holds 16 oz.