Baby Food Storage Glass Cups- Four Microwave, Freezer, and Dishwasher Safe Containers with Tray and Marker: These glass storage cups are a convenient solution for parents who make their own homemade baby food and want a storage alternative to plastic. Glass is the perfect material for storage because it won't stain, is dishwasher and freezer and safe, and this laboratory-grade borosilicate glass can even withstand heating in a microwave. Glass may get hot, so we recommend using the included tray to handle. Also included is a dry erase marker so you can easily record the contents and dates on the lid of the cups. Little Sprout baby food storage products are always BPA and Phthalate free. each cup holds 2 ounces so you can easily portion out baby's meals. Lids will not leak.