Your first order of our custom-molded products must always be supplemented with 3D scanning of your ears, ear impressions or another custom-molded product you already have. See www.hypear.com for more information. 2 custom-molded swim plugs to avoid problems with your ears. Design: Slightly oversized to seal properly. Material: Skin-friendly silicone that floats in water. Hardness: 35 Shore A Surface treatment: Skin-friendly anti-bacterial silicone lacquer (transparent) Marking: Red-Right (Red-Right) and Blue-Left Color choice: Red, Blue, Orange, Yellow and Green