Product features: Ardo Tulips breast shield Ultra-thin protection for sensitive nipples during breastfeeding Especially in the beginning, sensitive nipples often hurt during breastfeeding. Ardos Tulips nipple shields protect sore nipples and thus make it easier for the baby to nurse. The BPA-free, ultra-thin silicone of the nipple shields ensures a natural feeling while breastfeeding. The tulip shape allows the baby to continue to smell the mothers scent. Tulips also help with sucking and latching problems. Characteristics: For short-term use in cases of sucking and latching problems and sore nipples. Ultra-thin, soft silicone provides a natural feel. Available in sizes M (Ø 2.0 cm) and L (Ø 2.4 cm) Source: www.ardo.de As of September 2017