Replacement Chest Strap — key benefits and features Why you need it: keeps heartrate data accurate and consistent during sweaty workouts, wet conditions, and intensity movement so your training metrics are reliable. Compatibility and fit: suitable for various models. Adjustable sizing from 27.56–39.37 inches (secure, fit for most body shapes). Performance in real conditions: optimized for sweaty workouts and water resistant environments. Activated electrodes maintain skin contact and deliver realtime data consistency throughout exercise. Material and comfort: made from a stretchable silicone fiber blend that adapts to body movement while holding sensors firmly in place. Comfortable for long sessions in the gym or outdoors. Who it's for: designed for athletes, fitness enthusiasts, and outdoor adventurers who need a stable heartrate signal during running, cycling, and intensity training. Practical applications (real use scenarios) Interval running: stays snug through sprints and changes of pace so you get accurate heartrate zones for interval training. Road or mountain cycling in mixed weather: waterresistant construction and secure electrode contact preserve data when you sweat or ride in light rain. intensity gym sessions and crosstraining: stretchable strap and stable sensor positioning prevent signal dropouts during rapid movements and bodyweight exercises. Additional useful details Easy to adjust: simple size adjustment delivers a secure fit without chafing. Durable for regular use: materials chosen for repeated sweaty or wet workouts while maintaining electrode contact and comfort. Designed to maintain original function: replacement strap keeps sensor placement and data quality consistent with your device's requirements. What this solves Eliminates gaps and inaccuracies caused by loose or degraded straps. Keeps heartrate monitoring consistent across activities and conditions. Provides a comfortable, stable alternative to wristonly monitoring when precise heartrate data is required.