The Medela Contact Nipple Shields, 24mm, Silicone, DEHP & BPA Free, Clear, 67203NA, 1 Each is designed for comfort and ease of use. It's made from durable, thin silicone. This Medela Nipple Shield has a unique shape with a cut-out base that offers more skin-to-skin contact between mother and baby. It's DEHP- and BPA-free. This shield is ideal to use for latch-on difficulties or inverted nipples to help mothers with breastfeeding their baby.