Easy to use: just place cups inside bra and connect to a pump, pump directly into cups, then pour into storage containers Two 8oz, collection cups fit discreetly in your bra, pump up to 16 oz at once Compatible with all leading double electric breast pumps, including Medela (Pump In Style Advanced, Symphony and Lactina), NUK and Hygeia. Not compatible with Medela Freestyle and Swing. Connection kits sold separately for several other brands Milk contacting components made without BPA
