Garmin Premium Heart Rate Monitor Strap $69.95
Small, light, and flexible.
Yes, there are plenty of heart rate monitor straps on the market these days. However, not all monitor straps work with all watches/CPUs. The problem should be over now that the ANT+ signal of this Garmin Premium Heart Rate Soft Strap is received by most of the newest, highest tech gadgets on the market. Like PowerTap and Joule, though you'll probably need to run the "find" feature in order to sync up.
This soft strap is an upgrade from the standard Garmin strap that comes with your 500 or 705. The unit is smaller, lighter, more flexible. It syncs perfectly with the Garmin FR60, the Forerunner series watches, and the Edge series bike-mounted computers.
The claimed weight of the soft strap module is 18g, and the strap's claimed weight is 33g for a total weight of 51g.