Leather upper. Lightweight and extremely flexible construction. J&M Smart Degree Technology® temperature-regulating polymers that line interior activate at both hot and cold temperatures, so feet feel just-right all day long. Smart Degree linings are treated wtih anti-microbial protection for long-lasting wear. Removable, contoured EVA cushioned footbed. Extra-flexible, grooved TRUFOAM® sole for high-rebound and ultra-light cushioned comfort. Leather Working Group Gold Rated tannery. Lace-up closure Memory foam insole VIETNAM Imported Product Specifications <1 Inch M Material Leather