Tough enough for anything. Comfortable enough for every day. This season we've added kids sizes to the Tract collection. Matching the full-size versions, these boots built from a mix of Extra Tough Nylon and a durable rubbery material, with a Scotchguard, water-repellent finish to keep out mud and puddles. Our DNA is cemented with a scripted heel loop and yellow stitch. Built with core Dr. Martens DNA: grooved edges, an AirWair heel loop and visible stitching Extra Tough Nylon is an extra tough, synthetic woven fabric with exceptional strength and elasticity Rubbery is a synthetic material that looks and feels like rubber but is closer to PU leather. Wipe it clean with a damp cloth.