The handy set of four 2 oz/60 ml mini pots with graduations on the sides come with sealing lids. These are designed to collect and protect your breast milk. The milk storage pots are stackable, dishwasher-proof, microwaveable and suitable for freezing. The pot sits in the neck of the Closer to Nature bottle while breast milk is transferred via either the Manual Breast Pump or the New Electric Breast Pump. Take out the pot and store in the fridge or the freezer. The lid allows a date to be written on. You can decant from the pot into a bottle to feed directly to your baby. The pot can also be used as a breast cup for mums who want to breast feed exclusively or as a first taste food pot.?The handy set of 4 2oz/60ml mini pots with graduations on the sides comes with sealing lidsThese are designed to collect and protect your breast milkThe pot sits in the neck of the closer to nature bottle while expressing breast milk via either the Manual Breast Pump or Electric Breast PumpTake out the pot and store in the fridge or the freezerThe lid allows a date to be written onBPA free