For treatment of sore or latch-on difficulties, Medelas Contact Nipple Shields feature a unique cutout design to allow greater skin-to-skin contact between mom and baby while nursing. The thin, pure silicone shield provides a larger surface for baby to latch onto, helping both mom and baby enhance their breastfeeding experience.A unique cutout at the base of the shield allows for greater skin-to-skin contact between mom and baby. Helps with latch-on difficulties. Thin, pliable silicone for maximum comfort. Nipple shields should be used with the counseling of a healthcare of breastfeeding professional. Not to be worn between feedings.