Merrell Women's Barefoot Wonder Glove Flat 100% Leather and Textile Synthetic sole Heel measures approximately 0.25" Barefoot strobel construction offers flexibility and comfort Full grain leather and mesh upper Mesh lining treated with Aegis antimicrobial solution Integrated EVA footbed covered with pigskin leather and treated with Aegis antimicrobial solution 4 mm compression molded EVA midsole cushions