Compatible Models Designed specifically for WHOOP 3.0 and WHOOP 4.0 fitness trackers. Note: Fitness tracker not included. Breathable Nylon Material Made from quality stretchable nylon, providing a soft, lightweight, and breathable fit. The material is durable, flexible, and comfortable against the skin, making it suitable for longterm wear. Fully washable for easy maintenance. The band uses a tested hookandloop closure that offers secure fastening, even under active conditions, without risk of slipping or falling. Adjustable Size for Fit Equipped with strong hookandloop fasteners that allow quick adjustment to your wrist size for a snug and secure fit. Fits wrist sizes from 5.9 inches to 9.1 inches (150 mm to 231 mm), making it suitable for both men and women. Ideal as a thoughtful gift for fitness enthusiasts, friends, or family members on occasions such as birthdays, Christmas, Valentine's Day, Thanksgiving, or other holidays. Secure Plastic Case Connection The plastic case at each end of the band is engineered to lock precisely and firmly into the WHOOP tracker interface with gentle pressure. This secure locking system prevents the tracker and strap from detaching during use. Installation and removal require no tools. Practical Use Scenarios for daily wear, whether at the gym, during outdoor runs, or throughout your workday. Suitable for intensity workouts where a secure and breathable strap is essential. Comfortable enough for overnight use, allowing continuous fitness tracking without irritation. This replacement band combines comfort, secure fit, and durability, ensuring reliable performance during any activity.