Made of high-quality PP material, healthy and safe. Designed to work best with olive oil or cream. Helps correct inverted or flat nipples, supporting natural improvement and confidence. Clinically proven to assist in treating inverted or flat nipples and includes a replacement air valve. Suitable for pregnant women and mothers. Recommended usage: 3 hours per day. For enhanced suction, apply a small amount of skin cream around the nipple area when using the device. Correction time may vary depending on individual conditions. Results may take several months with consistent use—please be patient. Package includes: 2 nipple correctors Note: 1. Please allow slight measurement deviations due to manual measuring. 2. Color may vary slightly due to different monitor displays.