Review on Polar Pro Flex Strap by Chad Black

This strap only gives accurate readings for a few months, then it starts giving extremely inaccurate readings, jumps all over the place and finally stops at a very high heart rate. This is not a problem with the other hardware supplied. So far, this has happened to several Polar bracelets. The quality gets worse and worse over time. They only last a few months and then I have to buy a new one. I figured that by purchasing this newer, more expensive version I could avoid the problems the original straps were giving me, but apparently that's not the case. Over the years I've become more and more disappointed with Polar products and am preparing to switch to a completely different type of monitor.