AVIA Women's Gfc Studio Cross-Trainer Shoe 100% Textile and synthetic Imported Synthetic sole Shaft measures approximately 3.5" from arch Lightweight digital printed air mesh upper with seamless and stitched synthetic overlays for support and breathability. Dual durometer compression molded EVA midsole, featuring GELfm Cantilever (GFC) for superior cushioning. Molded removable super GELfm sockliner. Lightweight, solid rubber outsole with forefoot flex grooves for flexibility and forefoot outrigger for extra lateral stability.