Arche Women's Cactus Slip On 100% Nubuck Rubber sole Heel measures approximately 1/2" Arche uses natural principles and research into biomorphic design to allow each shoe to adapt to your individual foot For ultimate comfort Arche utilizes 100% milk fed latex soles to maximize flexibility Natural supple leather is maintained by the development of traditional tanning techniques that do not alter the leather after processing. The velvety aspect of the nubuck enhances the natural quality and the softness of each shoe.