Yaktrax Pro (pictured below): It features a spike-less light weight design and has 360 degrees of traction with a patented skid lock coil system. It also has a durable natural rubber blend for a good fit of the Yaktrax Pro. The removable performance strap and the heel tab allows for a good fit and easy installation and removal of the Yaktrax Pro.
Yaktrax Run (pictured below):: It is an ice traction device anatomically designed for use with running shoes (and can easily be applied to trail running shoes). It allows you to run naturally on packed snow and ice with the Yaktrax Run's combination of removable spikes and steel coils, providing 360° of traction. According to the manufacture, the Yaktrax Run can be worn in temperatures as low as ‑41° Fahrenheit. (This number was not actually independently tested by either Ashley or I. If it is ever ‑41° Fahrenheit I can guarantee you we will be indoors.)
If for some reason you had a pair and they were to break, YakTrax will replace them so long as they are under warranty if you contact them within 90 days (should cover a winter of use – they are clear to say that these are not to be used on bare asphalt or concrete). I would assume retails stores would also honor the warranty but I am sure that probably varies depending on location.
The Price for the Yaktrax Run is $40.00 and the cost of the Yaktrax Pro is $30.00. They are both reasonably priced and the Yaktrax Run probably offers just a little bit more traction with the spikes. They can be purchased in retail stores like REI or through online retailers like Amazon.