Stretch with the best in Wendy 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 and all new seasonal colors. Wendy Stretch Sox Details: Stretch mesh, Comfort cushioned ankle collar, Elastic laces, Easy-on system, Travel ready, Removable foam insole, Lightweight flexible outsole. Upper: Polyester/Cotton, Lining: 100% Cotton, Sole: EVA. Heel height approx. 2.5 cm.