Specially designed to simplify feedings and reduce waste of baby food or breast milk, these Fresh Baby® Baby Food and Breast Milk Trays won"t spill, and are an easy stackable way to safely store breast milk and pureed baby food. All you do is pour expressed breast milk or pureed baby food in the food safe trays, put them in the freezer and use what you need when you need it. The neat thing about the trays is they have covers, so there are no spills, no mess, and no odors. Each tray makes 12 pre-portioned servings, which measure about one ounce (30ml), which is a single serving of baby food or breast milk for a baby. Breast Milk cubes are the perfect answer to many situations. Since cubes defrost quickly, they are great for topping-off bottles, thinning baby food, or just adding a little extra nutrition to your baby"s cereal. You"ll only thaw what you need making it a convenience for Mom, Dad, or any caregiver. The heavy duty construction allows quick release of the frozen food cubes. They"re also dishwasher-safe, so clea-up is a breeze. The trays are FDA-approved food-safe plastic. #4 LDPE (Low Density Polyethylene) and #2 HDPE (High Density Polyethylene). They contain no PVC, Bisphenol-A or Plasticizer.