From Twisted X, the Women's Ostrich Embossed Chukka Driving Mocs feature: Ostrich embossed leather upper Lace up front with nylon laces Mesh lining Blend85™ footbed provides exceptional comfort & is made with recycled foam & features ecoTWEED™ lining made from recycled plastic bottles Three-quarter length composite insole Rubber outsole integrated with blended rice husk, which is an agricultural by-product that is typically thrown away Imported.