NIKE Women's Payaa PRM Running Shoe Synthetic-And-Leather Rubber sole Shaft measures approximately Low-Top" from arch Stretchy, one-piece mesh and foam upper for a sock-like fit, optimal breathability and easy on/off Lightweight lace system with a minimal lace lock creates support and a customizable fit Injected sole doubles as an outsole for lightweight cushioning, durability and reduced weight Cored-out outsole reduces overall weight and enhances flexibility Heel support is built into the outsole for stability, streamlined style and protection from the elements