The 4 independent and stackable compartments can be combined in any order and in any number, or they can be carried separately. Safe and hygienic material, high quality PP material food grade, non-toxic. 4-layer capacity design, each layer of the box can be used for one-time milk powder consumption, can hold 4 times more milk powder for meet the baby’s outdoor needs, very convenient and practical. Versatile - it can also be used as a snack cup and baby food container, very suitable for storing oatmeal, milk, etc. corn flour, nuts, candies, fruits and more. Soft PU ring easy to clean and carry, easy to carry, very suitable for travel or on the go. The small footprint means it can be easily stored in wheeled bags, bottles and coffee/drink cup holders.