The North Face Single-Track II Running Shoe - Women's Turquoise Blue/Vibrant Blue 8.5 Upper: Tongue scree collar Abrasion-resistant tight-weave mesh C-Delta metatarsal fit systemOrthoLite Northotic footbed Bottom: CRADLE heel cushioning and stability technology22 mm/10 mm heel/forefoot Dual-density, compression-molded EVA midsoleenacious Grip sticky rubber outsoleTPU Snake Plate forefoot protection