store, carry, & serve fresh, homemade baby food made from durable, lightweight safer plastic the is convenient for travel new, flexible lid design provides a leak-proof seal marked with ounces and milliliters to measure portions lids & trays interchangeable & stackable with all green sprouts food cubes Newly designed lids are crack-resistant & provide a leak-proof seal Made from durable, lightweight safer plastic Convenient for travel Lids & trays are interchangeable & stackable with other green sprouts food cubes