Horween Chromexcel N.A.T.O. Watch Strap [Black, 20mm] 20mm Black Produced using bark retannage and then hot stuffed with blend of natural oils and greases, making the strap both easy to adjust and durable. On the underside you will find collage of Horween logo stamped on the strap lining with permission. Buckle: Nickle, plated finish