•【Compatibility】Designed specifically for Whoop 4.0 fitness trackers, ensuring a perfect fit and seamless integration. •【Premium Materials】Crafted from a durable combination of silicone and zinc alloy for comfort and longevity. •【Adjustable Fit】Accommodates wrist sizes ranging from 150mm to 250mm, providing a comfortable fit for most users. •【Lightweight Design】With a lightweight, this band offers comfort for all-day wear without compromising on durability. •【Easy to Installation】The strap is easy to install and remove, giving your device a new look easily. Specifications: •Material: Silicone and Zinc Alloy •Dimensions: (136mm + 113mm) x 25mm •Wrist Circumference: 150mm - 250mm •Weight: 25.3g Compatible with: •WHOOP 4.0 Package included: •1 x Watch Strap •Not included other items