Dr. Martens Sinclair Milled Nappa Leather Platform Boots Black New with tags Lace up. Zip up. Boot up. The Sinclair boot is made from tough-yet-soft Milled Nappa leather. You can wear it with or without its statement front zip for maximum versatility or a customized look. Stacked on our chunky Quad platform sole and marked with yellow welt stitching and a DM’s heel loop. Footbed - Slimmer and a more tapered shape Sole Height - Platform height: 1 1/2 in; Heel height: 1 7/8 in Elevate your style with these Dr. Martens combat boots, featuring a smooth black leather upper and a chunky platform sole. The classic 8-eye lace-up design and signature yellow stitching add a timeless touch, while the rugged tread pattern ensures durability and grip.