Ben82 wrote:Here is your Answer!
http://www.wiggle.com.au/polar-spare-el ... link-plus/
The Polar strap is a direct replacement, you just clip the garmin sender unit straight to it and away you go.
I had the same issues with the oridginal Garmin premium strap it only lasted 3 months, I purchased the Polar strap back in March and it has worked flawlessly ever since.
Have just ordered from Wiggle. The Garmin is becoming more and more unreliable. Completely useless in fact.