I previously own a pair of Rainbow Sandals that be the single layer . I enjoy wear they they have a excellent build and form to my foot . however while climb Mt. Pinatuba in the Luzon Province of the Philippines one of we aeta guide break he sandal so I give he my rainbow as a replacement . after return from the trip my other sandal just would not do it so I log onto amazon and pick up this pair . they be great quality and even more comfortable than my previous pair . the price be a bit much but you really will not find a better classic pair of sandal .