From FRANKIE4, the Nat III Metallic Leather Sneakers feature: Metallic leather upper Slip on with elastic gusset can be worn with or without laces Laces made with recycled cotton Leather lining with specifically placed rpet foam lining - made from recycled plastic bottles - to alleviate pressure and rubbing on the skin Sole Hero® Footbed. Podiatrist-designed with adjustable heel, arch, and forefoot support Triple layer support & cushion system crafted to help prevent and alleviate common foot pain symptoms Podiatrist-designed dual-density molded soles, free of steel shanks and heavy materials Sole Saver Pack®. Customises your fit to regular, wide, or narrow. Features a full-length footbed, a half-length footbed, and forefoot cushions for tailored comfort Goldilocks heel counter. Perfectly balanced for just the right level of support, not too firm, not too flimsy Slip-resistant sole that meets and/or exceeds the slip resistance test ISO 13287:2019 (SRC). While these soles are slip-resistant, they are not entirely slip-proof. Exercise general caution as you would with any footwear Flat heel Imported.