From the site: • This style fits true to size. Nisolo shoes are handmade from genuine leather. For the greatest comfort, we recommend wearing your new Nisolo footwear for just a few hours for the first few days to allow the leather to mold to your feet. Within three to five wears, the leather will soften and mold to your feet. • Soft yet structured woven leather • Shock-absorbing foam midsole cushioning • Convenient, slip on comfort • Soft and buttery leather lining • Versatile design for any occasion • Durable rubber heel cap • Water-resistant leather upper • Vegetable tanned sole • High quality, durable leather • Leather Working Group Certified leather • 100% Living Wages, 0% Net Carbon