It has 4 mixing bowls with different capacities. These bowls are made of high-quality Pyrex glass that’s resistant to stain and odor. They’re see-through bowls, so you can see what is stored in them. They nest within one another for compact storage. These glass bowls have BPA-free plastic lids. The lids come in different colors such as green, orange, blue and red for easy identification. The bowls are dishwasher and microwave safe. 1 quart with green plastic cover, 1.5 quart with orange plastic cover, 2.5 quart with blue plastic cover and 4 quart with red plastic cover.