Oxo Tot Baby Blocks Freezer Storage Containers, 4oz (Opal)Description OXO Tot Baby Blocks Freezer Storage Containers give homemade baby food the same care you put into preparing it. Easily portion, store, freeze, heat, and serve the meals youve cooked. On the go? The containers are airtight, watertight and leakproof. Peek at the clear Containers to identify the contents, then pop one into your bag for simple defrosting and feeding when youre out and about. An easy open, easy shut lid (even with one hand)