Coros Heart Rate Monitor Size:ALL heavyweight 100% organic cotton flannel

heavyweight 100% organic cotton flannel lined with contrast polyester plain weave and insulated with 60-g Thermogreen™ 100% polyester (90% recycled) for increased warmth

with or without a helmet

3-oz 200-denier 100% recycled polyester with a polyurethane coating

shopping etc

darted knees and a gusseted crotch enhance movement

Coros Heart Rate Monitor Size:ALL heavyweight 100% organic cotton flannelCOROS HEART TRATE MONITOR, PRECISE DATA, TOTAL COMFORT. Compatible with any Bluetooth heart rate enabled device, the COROS Heart Rate Monitor delivers over 38 hours of continuous accurate heart rate monitoring to track your workouts in distraction free comfort. Features Product detail Comfortable and simpler to wear than a chest strap. Easy to adjust the fit and remove the sensor for quick cleaning. Our latest multi channel optical sensor for precise