OXO Tot Baby Blocks give homemade baby food the same care you put intopreparing it. Easily portion, store, freeze, heat, and serve the mealsyou've cooked especially for your baby using Containers in convenientfour-ounce sizes. Each container fits into the freezing tray, and hasmeasurement markings to make portioning a snap. On the go? Thecontainers are airtight, watertight and leakproof. Peek at the clearContainers to identify the contents, then pop one into your bag forsimple defrosting and feeding when you're out and about with your tot.An easy-open, easy-shut lid makes the Containers a carefree choice.