The Shell Cordovan Watch Strap is made with two layers of leather hand stitched with French "Lin Cablé" linnen thread. There is a choice of two different linnen threads, white or one that matches the upper leather. The upper leather is of course world renown Shinki-Hikaku shell cordovan from Japan. The bottom leather is Tärnsjö´s veg tanned leather (saddle tan). Please write to email@example.com when ordering if you have any questions or special requests.