1. Comfortable and Breathable: The soft replacement strap is made of Cashmere + zinc alloy material, fitting snugly around the wrist without leaving marks. Its excellent breathability ensures no sweat buildup even during prolonged use, perfect for sports and daily wear.<br> 2. High Elasticity and Durability: The sports wristband features a woven Cashmere structure with elasticity, adapting to wrist sizes. It is wear- , maintaining shape without breaking, ideal for intense workout environments.<br> 3. Easy Cleaning and Quick Drying: This wrist band can be easily cleaned with water and dries quickly, keeping it fresh and hygienic for frequent users.<br> 4. Stable and Secure: Specifically designed for Whoop 4.0 wearable health fitness activity tracker straps, offering precise fit and preventing loosening for peace of mind during exercise.<br> Color: Black<br> Material: Cashmere + Zinc Alloy<br> Package Contents:<br> 2 x Fitness Band<br> Only the above package content, other products are not included.<br> Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.