A Lansinoh breastfeeding nipple shield can help during the nursing process with latch-on difficulties related to flat or inverted nipples, tongue or lip tie, and overactive let-down. These breast shields for breastfeeding are made out of ultra thin, super-soft flexible silicone that's BPS and BPA free. With these nipple guards breastfeeding isn't disrupted because the cut-out design provides maximum skin to skin contact the entire time. Each set of nipple shields comes with a protective case for hygienic and convenient storage between uses. A nipple protector for breastfeeding should only be used under the advisement of a healthcare professional. HSA/FSA EligibleRestrictions apply; contact your insurance provider about plan allowances and requirements.