Finn Comfort Prevention Line Oxford 100% Leather Rubber sole Leather upper with soft, padded leather lining offers a comfortable foot environment that's great for sensitive feet. Cork and latex rubber insole molds to your foot over the first few days, providing a customized fit. Removable insole can be replaced with your own custom orthotic. Polyurethane outsole easily flexes with your foot, while a shock-absorbing heel cup helps reduce foot fatigue.