Leather upper. TOMS leather products support responsible manufacturing via the Leather Working Group. TPR outsole and midsole. 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. Ankle strap with adjustable buckle. Your TOMS purchase helps support children's education, health and well-being, giving kids everywhere the gift of better tomorrows.