OXO Tot Baby Blocks give homemade baby food the same care you put into preparing it. Easily portion, store, freeze, heat and serve the meals you've cooked especially for your baby using Baby Block Containers in convenient two ounce size. Six 2 ounce containers fit into the freezing tray and each has measurement markings to make portioning a snap. On the go? The Containers are airtight, watertight and leak proof. Peek at the clear Containers to identify the contents, then pop one into your bag for simple defrosting and feeding when you're out and about with your tot. , , An Easy open, each shut lid makes the Containers a carefree choice. Convenient storage tray rests flat on a freezer shelf or in a freezer drawer and can be stacked to save space. Microwave and freezer safe. Top rack dishwasher safe. BPA, phthalate and PVC free.