Features: Encourages baby to latch on to the breast. May help bottle-fed babies return to breastfeeding. Made of ultra-thin silicone for flexibility and a of more natural feel. Protect from soreness and helps relieve engorgement by applying gentle areolar pressure. More flattering appearance under clothes than other shells. Specifications: Material: Silicone Color: Transparent Nipple length:Approx.23cm Package size:Approx.11.2x6.3x3.8cm Shape: Semicircular Package included: 2pcs x Nipple Shields 1pc x Box Note: 1. Due to the light and screen difference, the item's color may be slightly different from the pictures. 2. Please allow 0.5-2 cm differences due to manual measurement. How to use: Wipe the nipple and areola with a wet towel before use. Cover the breast with your protective cover and then breastfeed. After use, please wash with water or put it in a sterilizer for disinfection.