Stretch with the best in Wally Stretch Sox. Classic HEYDUDEâ„¢ construction, stretch mesh material upper and elastic laces mean slip-on ease, comfort and lightness from top to bottom. Rock it all in foot-hugging style. Wally Stretch Sox Details: Stretch mesh, Comfort cushioned ankle collar, Elastic laces, Easy-on system, Travel ready, Removable foam insole, Lightweight flexible outsole.