1/4, 1/3, 1/2, 1. One day a food storage container, the next day a measuring cup. Nothing wasted. Everything gained. The curved bottom of the cup makes releasing dry ingredients easy as pie. The measuring cups are designed to work hard and make you happy for years to come. If they get tired, recycle them wherever no. 5 plastics are recycled. BPA free. 100% recycled plastic. Dishwasher safe. Made in USA from 100% recycled materials including food storage containers.