Your first order of our custom-molded products must always be supplemented with 3D scanning of your ears (New), ear impressions or another custom-molded product you already have. See www.hypear.com for more information. 2 custom-molded sleep plugs with extra soft silicone for highest comfort. Design: Nominal size for best comfort. Material: Skin-friendly silicone Hardness: 25 Shore A Color: Transparent Surface treatment: Skin-friendly anti-bacterial silicone lacquer (transparent) Marking: Red-Right (Red-Right) and Blue-Left