Suede uppers. TOMS leather products support responsible manufacturing via the Leather Working Group. Non-removable high-rebound comfort OrthoLite® Eco X40-Hybrid™ insole made with 32% eco content including 15% hybrid materials, 12% bio-oil and 5% recycled rubber. Medial zipper and heel pull tab for ease of entry. Stacked, leather-wrapped wedge. Wedge height is approximately 2 3/4", shaft height is approximately 5". Your TOMS purchase helps support children's education, health and well-being, giving kids everywhere the gift of better tomorrows.