Adjustable size: the size is one meter in length, and the distance between the two holes is 45mm.
Compatible with heart rate sensor: Support 5MM center distance heart rate belt with universal Bluetooth transmitter.
Made of nylon and spandex material to fit your skin tightly. The soft fabric and electrodes make it sensitive to your heart’s electrical signals.

Versatality: Polar OH1 allows you full freedom of movement regardless of your sport. Wear Polar HR monitor either on your arm when rowing, cycling, running or training indoors or against your temple when swimming
Comfort: The soft textile armband keeps Polar OH1 snug around your arm. The swimming goggle strap clip, included in the Polar OH1 + package, keeps Polar HR sensor steadily in place when you swim
Connectivity: Pair HRM with the free Polar Beat fitness app, Strava or Nike, your sports or smart watch (Polar, Garmin, Apple, Suunto and others), bike computer or gym equipment (Peloton) via Bluetooth or ANT+ simultaneously

UNIVERSAL CONNECTIVITY – Designed to connect seamlessly to any Peloton product. The Peloton heart rate monitor uses Bluetooth wireless technology to give you in-moment progress updates and connects to your phone, tablet, and other fitness apps.
INTERACTIVE HEART RATE TRACKING – One of the most interactive Peloton accessories with band vibrations and easy-to-read rainbow LED lights that show your heart rate zone at a glance, so you can optimise your intensity levels at the right time.
COMFORTABLE FIT – The Peloton heart rate monitor is designed with a flexible forearm strap and hook and loop closures that allow you to adjust the positioning for maximum comfort.