The WHOOP 4.0 Performance Band and Strap deliver advanced biometric monitoring with a sleek, adjustable design for all-day comfort. Engineered to track heart rate variability, sleep quality, and recovery metrics precisely, this band supports athletes and fitness enthusiasts in optimizing performance and maintaining health insights. Durable and lightweight, the WHOOP 4.0 Strap ensures a secure fit during intense activities, making it an essential tool for data-driven training and recovery management.