AVIA Women's Avi-Vault Running Shoe 100% Mesh/Synthetic overlays Imported Synthetic sole Breathable air mesh upper with 3-D printing detail and synthetic overlays. Dual durometer, compression molded EVA midsole with heel insert for enhanced cushioning and impact absorption. Molded removable GELfm sockliner. Lightweight, solid rubber outsole with forefoot flex grooves.