Adaptable traction for roofing work. Accessory sole to be used with Korkers TuffTrax 3-in-1 Roofing Sandal. Spiked rubber sole provides traction on wood-shake roofs, roofs with steep pitches and difficult terrain. Recommended for intermittent use. For prolonged use, Korkers recommends the TuffTrax Roofing Sandal (Sizing US: Men's: MD 7-9.5, LG 10-11.5, XL 12-13.5, XXL 14-15, Women's: MD 8-11, LG 11.5-12). Material: Rubber.