They are attractive and 12 is perfect for my 11 watt legs. Unfortunately, building is cheap. The ledge peels off after 5 miles of walking. Also, the top of the heel is rough and stiff so it hits my Achilles tendon with every step. I had to stop after 500 feet for fear of blisters. I ended up gluing a patch to my heel to resist chafing. Thin soles lack arch support and cushioning. A pair of insoles from Dr. The $12 Scholl solved this problem and reduced Achilles tendon chafing to an acceptable level. More trouble than good. Not recommended at all.