Can I buy the Yaktrax Pro strap to turn my Yaktrax Walker into a pair of Yaktrax Pro?
NO. The Yaktrax Pro has moulded loops through which the strap is threaded, which the Yaktrax Walker does not. You can certainly remove the strap from Yaktrax Pro so it is as easy to put on and take of as the Yaktrax Walker, but you would not be able to use the Yaktrax Pro strap on the Yaktrax Walkler as it does not have the moulded loops.