AVIA Women's Avi-Circuit Training Shoe 100% Synthetic Mesh/Synthetic Leather Imported Rubber sole Breathable air mesh upper with leather and synthetic overlays Molded EVA midsole with avia's arc reinforced outsole that provides superior support, cushioning and stability Removable gelfom insole Solid rubber outsole with forefoot grooves for increased flexibility Slightly wider outsole for additional lateral/side to side support