The elastic cord lace and adjustable hook-and-loop strap allows kids to put these shoes on and take them off by themselves. Polyester webbing upper. AEGIS Microbe Shield is treated by a hydrophobic mesh lining that controls bacteria and fungi, which cause odors, stains, and product deterioration. Mark-free rubber outsole. Secure-fit Lace Capture System with added hook-and-loop adjustability .