2-in-1 shoe kit with 1 shoe base and 2 interchangeable straps 1.5" heel made of recycled plastic Genuine leather upper and Eco-leather sole for increased breathability Sandal can be worn with most Alterre straps and detachable strap with most Alterre shoe bases Available in regular full sizes 6 - 10 (see sizing guide for best fit) Fits snug at first but leather loosens to mold to your feet over time