Reebok Women's Zprint Training Shoe 100% Synthetic Imported Rubber sole perfect for a variety of high heart rate interval training activities which require cushion underfoot and stability on the sides A 5 millimeter flat molded Polyurethane Foam sockliner for ultimate cushion NanoWeb technology for lightweight seamless upper support 3D FuseFrame on midfoot for enhanced stability A lightweight breathable performance mesh perfect for flex in all directions