AVIA Women's GFC Intense Cross Training Shoe 100% Textile and synthetic Imported Rubber sole Cantilever design outsole centers the heel over a concave sole creating a trampoline effect for impact absorption and comfort Gelfom insert in the heel of the midsole offers exceptional absorption as well as rebound Avia's highest quality insole that combines cushioning gelfom along with a supportive design that mirrors the foot Fused no sew upper design that is lightweight and breathable