Designed to work with select Polar Chest Transmitters. The HeartRateMonitors USA soft chest strap is designed with most heart rate trainers in mind! Comfortable and machine washable. About this item -Replacement Soft Strap works with Polar H1, H2, H6, H7, H9, H10, Wearlink &, Bluetooth Transmitters -Works with Wahoo, Garmin Dual and many other -Soft Strap Snap-in Transmitters -Great for Schools & Gyms looking for assorted sizes Strap Sizes XSmall-Small 22 to 33 inches
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