These BPA free plastic containers are built with an airtight leak proof seal and secure latches. Crystal clear lids and bases make it easy to see what's inside and are stain and odor resistant, which helps them stay looking new. Featuring a splatter free lid design, built in vents allow steam to escape so you can conveniently microwave food without removing the lid. The 10-piece set includes two 1.3 oz cups with lids, two 3.2 oz cups with lids and one 9.6 oz cup with lid.