Polar Holder for s3+ Stride Sensor (sold separately)

Compatible with s3+ Stride Sensor (sold separately)
The elastomer holder attaches to your shoelace and is designed to protect your Polar s3+ stride sensor from wear and tear wherever you run. The sensor is placed inside the holder and sealed to prevent it from dropping while you’re training. The holder guarantees more accurate speed/pace and distance measurement because it’s mounted firmly.