The tommee tippee closer to nature milk storage pots are designed to collect and protect your breast milk and feature graduations on the sides and sealable lids. these storage pots are stackable, dishwasher proof, microwavable and suitable for freezing. the pot sits in the neck of the closer to nature bottle while expressing breast milk via a manual or electric breast pump. once done you can store the pot in the fridge or the freezer and the lid allows a date to be written on. to feed your baby you can decant from the pot into a bottle. the pot can also be used as a breast cup for mums who want to breast feed exclusively or as a small food pot.