Bespoke Shell Cordovan. Your Width. Your Colour. Your Stitch. Shell cordovan is the most prized leather in the trade — cut from the dense fibre layer of a horse’s hindquarter, where the grain packs so tightly the surface takes on a deep, glassy shine. Ours comes from the Shinki Hikaku (新喜皮革) tannery in Japan, the name behind the most uniform, immaculate cordovan made. This is the same double-sided cordovan strap we build in our standard range — cut, chiselled and stitched by hand at 2.8mm — but made to order. Choose the leather colour, the lug/buckle width (anywhere from 17/14mm up to 24/20mm), the length, the stitching style and thread colour, and whether you’d like quick-release spring bars. Because you pick the width, it fits watches a standard 20mm strap never could. Bespoke, at the lowest cordovan price you’ll find.The same tannery, the same double-sided build — sized to your watch and your wrist, 20mm or not. Made to your spec.Leather colour, lug/buckle width, length, stitching style and thread colour, and quick-release spring bars — all your call. We cut and stitch it to order. Any width, 17–24mm.Not a fixed 20mm: pick 17/14, 18/16, 19/16, 20/16, 21/16, 22/18, 23/18 or 24/20mm — so it fits watches an off-the-shelf strap can’t. Double-sided cordovan.Shell cordovan for the lining as well as the face — no cheap backing on the flesh side, for the most durable strap we can make. Shinki Hikaku horsehide.From the Japanese tannery prized for the glassiest, most uniform cordovan in the trade — built at 2.8mm. Heads up — this one is built to your watch You choose the width. Unlike our fixed 20/16 straps, the custom is cut to the lug/buckle width you pick — 17/14mm through 24/20mm — so it fits far more than 20mm-lug watches. Need a width, length or thread that isn’t listed? Choose “Others”, or email us. Your build, your call. Leather colour, length, stitch style, thread colour and quick-release spring bars are all selectable — see every option in the Sizing & Fit tab. Custom order — please read before you buy By ordering, you understand this is a made-to-order custom strap: it takes 3–4 weeks to make before it is sent out, and once production has started the order cannot be cancelled. Specs Sizing & Fit Leather Care What’s Included Leather & Make Quality Handmade — hand cut, chiselled & stitched Leather Type Shell Cordovan Construction Double-Sided Shell Cordovan (cordovan lining) Tannery Shinki Hikaku (新喜皮革), Japan Thickness 2.8mm Buckle Polished, in your chosen width Made to order — you choose Leather Colour Black, Chocolate, Cognac, Green, Navy Blue, Red Wine Lug / Buckle Width 17/14mm, 18/16mm, 19/16mm, 20/16mm, 21/16mm, 22/18mm, 23/18mm, 24/20mm (or Others) Length [Long / Short end] XS 95/60, S 105/65, M 115/70, L 125/75, XL 135/80mm (or Others) Stitching Style Full Stitch or Side Stitch Stitch Colour Tone-on-tone, or your pick from our full thread range Quick-Release Spring Bars Optional (recommended) Choose your width 17/14mm, 18/16mm, 19/16mm, 20/16mm, 21/16mm, 22/18mm, 23/18mm, 24/20mm — or pick Others for anything in between. Choose your length (long end / short end) XS 95 / 60mm S 105 / 65mm M 115 / 70mm L 125 / 75mm XL 135 / 80mm Most people wear M. Unusual wrist or watch? Choose Others in the dropdown or tell us your exact width and length and we’ll build to it. Fitting it Add quick-release spring bars (recommended) and you can swap the strap in seconds with no tools. It’s cut to the lug width you choose, so it seats on your watch specifically. Building a Seiko mod? See our complete build guide . Keep it out of prolonged water. If it does get wet, let it dry naturally away from direct heat — never force-dry it. Buff with a soft, dry cloth to bring the glassy shine back up; cordovan often blooms a light haze that wipes straight off. A little cordovan cream once in a while keeps it fed. It will deepen and patina with wear — that’s the leather doing its job, not wearing out. 1x Handmade Shell Cordovan Strap — built to your spec Quick-release spring bars (if selected) All photos of watches with modification parts are for illustration purposes only and are not included with the strap purchase.