From FRANKIE4, the Lincoln Leather Sneaker Mules feature: Tumbled leather upper Slip on with lace up front Spare laces made from recycled cotton Leather footbed cover and lining with specifically placed rPET foam lining - made from recycled plastic bottles - to alleviate pressure and rubbing on the skin Sole Saver Pack®: enabling a regular, wide or narrow fit with our clever pack included in the box. Customize the fit to each foot Sole Saver Pack® includes a full-length Sole Hero® Support Footbed, a half-length Sole Hero® Support Footbed, and forefoot cushions Sole Hero® Support Footbed – Podiatrist designed | adjustable:HEEL, ARCH & FOREFOOT SUPPORT Triple Layer Support & Cushion System designed to help prevent and alleviate common foot pain symptoms Lightweight, supportive clouds under your feet. Our Podiatrist designed dual density molded sneaker soles are free of steel shanks and heavy materials Slip resistant rubber outsole Imported.