Pumpin’ Pal Small Set (XS, S, M) + Idaho Jones 21mm silicone flanges + 21mm silicone flange inserts Pumpin’ Pals Set includes one pair each of silicone Extra Small, silicone Small, and hard plastic Medium shields. This set also comes with one pair of collar ring adapters for the silicone flanges. The Small (pink) and X-Small (blue) Silicone PumpinPals, with Elast+Assist Technology™ (EAT), help improve milk flow for moms with elastic breast tissue. Medium (green) are hard plastic. (Green used a few times and sterilized. Pink and blue never used) Idaho Jones Cushy Silicone Breast Pump Flanges - Discover ultimate comfort with Cushy Silicone Breast Pump Flanges. These flanges offer a comfortable and efficient pumping experience even for elastic nipples. (Used a few times and sterilized) 21mm silicone inserts for use with larger hard plastic flanges. (Used a few times and sterilized)