The only way to make your favorite running shoes even more comfortable and supportive is the Montrail Enduro Sole a heat moldable insole that flexes with your foot's natural range of motion and providing support through the entire gait cycle. The Enduro Sole is a great alternative to worn out insoles and can customize the fit of a new pair of footwear.
These insoles are unisex and come only in whole sizes. If you are between sizes size up and trim the insole to fit your shoe. When ordering for women order one size down and trim to fit.