COROS Heart Rate Monitor (LARGE) M Fresh Foam X More v4 with a durable rubber outsole

with a durable rubber outsole that provides solid traction on a variety of surfaces

the built-in recovery time advisor lets you know how long to rest before another big effort

Knit with Balega's proprietary Drynamix® fibers to keep feet cool and dry

Features Helion™ superfoam for high performance in urban environments

Discover serenity in motion with the MIZUNO Neo Zen

COROS Heart Rate Monitor (LARGE) M Fresh Foam X More v4 with a durable rubber outsoleComfortable 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 measurement. Up to 3 simultaneous connections with Bluetooth enabled devices. Wear detection allows for automatic device pairing for new workouts. 38 hours of full operation or 80 days in standby mode on a single charge. Rechargeable with a magnetic USB charging cable.