Made from soft napa leather, these chunky ‘gladiator’ sandals are styled with a platform sole and metal buckles. Padded leather insole for extra comfort. Rubber outsole. Platform height heel 3.5 cm, front 2.8 cm. The leather used has undergone a metal-free tanning process, where a hide was converted to soft and supple leather using vegetable or synthetic extracts instead of metal salts.