Leather uppers. TOMS leather products support responsible manufacturing via the Leather Working Group. Rubber outsole. 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 for easy on and off. Heel height is approximately 3 ¼", 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.