Swiss FKM Rubber Band for Apple Watch – Built for Adventure, Engineered to Last Molded from Swiss-grade FKM rubber—trusted in aerospace and aviation—this band offers exceptional durability and performance. It resists UV rays, extreme temperatures, mechanical stress, chemicals, and seawater. Non-toxic, non-marking, hypoallergenic, and dust-resistant, this strap is made to endure even the harshest environments while keeping you comfortable all day. Secure your Apple Watch with confidence and explore the world in both style and comfort. Details Band Material: Premium Swiss-grade FKM rubber Hardware Material: Flexible & secure 316L stainless steel interface Wrist Fit: 5.7–9 inches / 145–230mm Apple Watch not included Free U.S. Shipping Compatibility Apple Watch Ultra / Ultra 2 – 49mm Apple Watch Series 10 – 46mm Apple Watch Series 7 / 8 / 9 – 45mm Apple Watch Series SE / 4 / 5 / 6 – 44mm Apple Watch Series 3 – 42mm