Premium Cashmere MaterialCrafted from cashmere and spandex blend, offering a luxurious and comfortable feel against the skin Perfect Fit for Whoop 4.0Specifically designed to be compatible with Whoop 4.0 fitness tracker, ensuring a secure and snug fit Elastic DesignThe stretchy band provides flexibility and adjustability for various wrist sizes, enhancing comfort during all activities Durable ConstructionFeaturing zinc alloy components for added durability and longevity, withstanding daily wear and tear Lightweight ComfortWeighing only 13.6g, this band is incredibly light, allowing for all-day wear without discomfort Specifications: Material: Cashmere, Spandex, Zinc Alloy Dimensions: 232 x 25 mm Weight: 13.6g Package included: 1 x Watch Strap Other items not included