Get the most out of your running or walking workout in any season with these all-weather cardio accessories, from pedometers and water bottles to smart solutions for where to stash your keys, iPod, and other essentials.
Polar F4 Heartrate Monitor
Track your heart rate, count calories burned, see how far you've run, and more with this wearable, easy-to-use training tool.
Polar F4 Heartrate Monitor, $89.99