ASICS Women's Gel-Equation 6 100% Synthetic and Mesh Rubber sole Women's Asics, Gel Equation 6 Running Sneaker the fresh update to the Equation 5 , with a new upper and cushioned ride at an exceptional value Synthetic and mesh upper designed for the under-pronator to over-pronator with high to normal arches California Slip Lasting for stability and comfort, the upper is stitched around a canvas EVA board and directly attached to the midsole