This set includes various sizes with color-coded airtight lids for easy organization. Made from durable tempered glass, the containers are stain and odor resistant, and safe for dishwasher, freezer, and microwave use. The BPA-free plastic lids are also freezer, microwave, and top-rack dishwasher safe, with a 2-year limited warranty. Price drops from $39.99 to just $29.97. Shipping is free over $35 or adds $6.99.