Boss Kai Nylon/nubuck Lace Runner - White Material Content: 100% Polyester, 55% Polyurethane 45% Polyester, 65% Polyurethane 35% Polyester, 70% ethylene vinyl acetate 30% Rubber Washing Instructions: Wipe Clean. High-quality workmanship. Fashionable design that pairs well with various styles. Fit: Regular. Closure: Lace-up. Interchangeable footbed. Upper material: Fabric, synthetic, suede. Sole: Rubber. Color: Black, beige, white. Material: Fabric, synthetic, suede, rubber.