Brand quality 18mm 19mm watchband Rubber silicone Watch band for Patek strap for Philippe belt Ladies Aquanaut 5067A 491PTK series Product details Top high quality nature silicone rubber,Breathable, Durable, Fresh material,soft and confortable,Strong diving performance Waterproof treatment Soft and easy wear, prevent sweat erosion,Waterproof, wear-resistant and scratch-resistant 316L stainless steel buckle The clasp is made of steel and polished to be round,Ergonomically designed, strong, rust-proof and waer-resistant Nature products Selection of nature resin silicone tough, durable. No smell, soft and confortable Flat interface Easy to install. Tight bonding of high grade atmosphere. Easy to wear.