The first to launch the four-sided fast-keeping box, Lock & Lock has long been in the first place in the Korean market, with a total sales of 425 billion won in 2016, and Lock & Lock is also the most popular fresh-keeping box brand in China, accounting for 40% of the total revenue in China. Its crisper box has a good seal, so it is also used by mothers to store milk powder.

The double-layer multi-purpose fresh-keeping box is divided into two layers, which is relatively more convenient for short-term use, each layer can be filled with quantitative milk powder, of which the LLS211S2 volume is the smallest, the height is about 11cm, and the space occupied in the bag is less, the capacity of the two layers is 150mL, the capacity is larger, and the price of the two-piece set is about 38 yuan. However, unlike the milk powder box launched by the mother and baby brand, the crisper box of Lock & Lock does not have a funnel-shaped outlet, and it is not convenient to pour the milk powder from the crisper into the bottle, which may cause waste, and it is best to use it with a milk powder spoon or funnel.

The odorless sealed milk powder can is more suitable for storing milk powder, the screw cover with the sealing ring is more moisture-proof, and there are more capacity options, there is no need to open the large milk powder tank every time the milk is brewed, which is convenient for daily use, and you can also choose a 360mL small-capacity model if you go out, the disadvantage is that it is also more troublesome to pour powder, and it is recommended to use it with a milk powder spoon.