Dr. Martens Audrick Nappa Leather Platform Shoes in Cobblestone Grey, Size 11. Gently worn, like new. Lightweight platform sole Nappa Lux is a classic nappa leather — soft and smooth to the touch Goodyear-welted lines are heat-sealed at 700°C and reinforced with our signature welt stitch Platform height: 1 1/2 in; Heel height: 1 7/