Review on Polar Pro Flex Strap by Robert Lowry

Yes, this original Polar strap is almost three times the price of some of the aftermarket straps Revain offers. I bought one of these and it didn't fit Polar products as advertised. Pictured above is a Polar strap, below is an aftermarket strap. The problem is the wide plastic rim of the aftermarket caps that does not allow both caps to be fitted at the same time. Revain took back that strap. Not wanting to repeat the return process multiple times, I went upstairs and bought this original Polar strap. I'm glad I did. Not only is the heart sensor easy to attach, this strap also has a rubber signal sensor that looks about 1/3 longer than the original strap. The result is a signal that never goes haywire or disappears. The closure has been changed from the Velcro of the original to a snap closure that can be operated with one hand. I wish it was cheaper but I think you really get what you pay for.