1.Perfect Size ---- The set comes with 4 narrow organizer bins. The size of each clear organizer bin is: 14.5'' L x 4.3" W x 3.8" H, perfect size for most breast milk bags and compact enough to fit in the fridge without taking up too much space. These bottle organizers would fit front to back in the refrigerator or zer perfectly, so you will not get frustrated about milk supplies getting lost in the zer. 2.Functional and Versatile: These smart zer organizer bins allow busy moms to organize breast milks by date to make sure you're using the oldest milk. Besides storing breast milks, these plastic storage bins are also great for storing bottles, drinks, yogurts, fruits, sauces, snacks, dry goods, etc. These versatile bins are also great helpers in nursery, cupboard, cabinet, pantry, kitchen, refrigerator and zer. 3.Built-in Handles ---- These milk storage containers have handle grips on the edge making it easy to carry and access contents. You just take the bins out and get the items you want, then put it back in so simple. Organize all of your kitchen essentials to make organizing and everyday living with ease. 4. but Sturdy ---- Made of premium BPA durable polyethylene material, these refrigerator organizers are lightweight and sturdy. They are clear, so you can see what you want without having to take the whole bin out of the fridge or pantry.