Product details:

The stiff nylon fiberglass sole is rigid for the maximum power transfer from your legs to the pedals on every pedal revolution. Three hook and loop straps provide the best fit possible, while breathable mesh uppers and air vents on the outsoles will help keep feet cool. There are reflective heel tabs for nighttime riding safety. They have stout lugged soles for good traction and are compatible with SPD & SPD-R cleats.