The breast cups have been designed to help you breastfeed if you have problems with the nipples or when you put them on. The ultra thin butterfly breast cup allows the baby to touch and hold the bond while breastfeeding.Breastfeeding aid if you have problems with them or if you have problems wearingUltra thin butterfly shaped breast cones allow contact with your baby’s chestSuitable for all needs: small size (15 mm) and medium size ( 21 mm)Easy to clean anytime and anywhere thanks to the transport and sterilisation boxBPA free, sterilizable and dishwasher safe