finever silicone nipple shield with carrying case for breastfeeding mothers imitation breast shape and 4-holes design with clear case standard 20mm 1pair finever flexible & soft - soft cushions protect sore nipples and chafing.gentle pressure on areola relieves engorgement. perfect for poor latch, flat/inverted & sore cracked nipples,tongue or lip tie, or overactive let-down <br><br>kindly reminder - nipple shields with a protective case for hygienic & convenient storage. washable or sterilized by boiling.comfort breast shells should not be worn for more than 40 minutes at a time(the fifth image is the use steps)