Reebok Kids Mens Zprint Run (Little Kid/Big Kid) Mesh Synthetic sole Synthetic and mesh upper for support and breathability Low-cut design for freedom of motion at the ankle 3-D footscan-engineered midsole for a custom-made, cushioned ride Outsole inspired by digital foot maps for zoned support and flexibility. Removable Ortholite sockliner for added comfort from the first step.