Lansinoh Contact Nipple Shields are effective tools for addressing short term latch-on issues related to premature, small, or ill infants, flat or inverted nipples, tongue tie, lip tie, or overactive let-down. Lansinoh’s contact nipple shield has been specially designed with a cut out to maximize skin-to-skin contact. Includes two 20mm or size 1 nipple shields and a protective case for hygienic and convenient storage. A nipple shield should be used under the advisement of a breastfeeding professional. A mom can use the nipple shield to address soreness issues. However, this would not be our first recommendation to help ease soreness. It is advisable for moms to first try addressing soreness with either Lansinoh HPA Lanolin or Lansinoh Soothies Gel Pads. If a mom is using a nipple shield to address soreness we would strongly recommend that she consults with a lactation professional to address the underlying issue that is causing the soreness. Founded by a breastfeeding mom, Lansinoh has been committed to helping moms succeed in breast feeding for over 30 years. Lansinoh is a leader in breast feeding products and accessories, famous for its award-winning cornerstone product, HPA Lanolin, Lansinoh, and Lansinoh nursing pads. For more information, please visit Lansinoh.com or connect with Lansinoh on Facebook, Twitter, Instagram, Pinterest and YouTube.