•【Versatile Compatibility】Designed specifically for Whoop 4.0,ensuring a perfect fit and seamless integration with your device. •【With Adjustment Buckle】Designed with an adjustment buckle for easy adjustment and secure fastening. •【Premium Materials】Crafted from durable nylon,offering both flexibility and strength. •【Adjustable Fit】Accommodates a wide range of wrist sizes from 5.5 to 8.7 inches,ensuring a comfortable fit for most users. •【Lightweight Comfort】With a lightweight,this strap provides a barely-there feel for all-day wear. Specifications: •Material: Woven Nylon •Weight: 9.5 grams •Wrist Size Range: 5.5 - 8.7 inches •Total Length: 220mm Compatible with: •WHOOP 4.0 Package included: •1 x Wrist Strap with Protective Case •Not included other items