You just put it in your bra and tadaaa
Mumilk!!
https://www.amazon.co.uk/Medela-Harmony-Silicone-Nursing-Breastfeeding/dp/B08DBMQSVN/ref=asc_df_B08DBMQSVN/?tag=googshopuk-21&linkCode=df0&hvadid=501251277066&hvpos=&hvnetw=g&hvrand=11628220466467745652&hvpone=&hvptwo=&hvqmt=&hvdev=m&hvdvcmdl=&hvlocint=&hvlocphy=1007835&hvtargid=pla-987766004771&psc=1&th=1&psc=1
I have the Momcozy s12 pro and have no complaints