Extra-Long Shark Skin Strap for Seiko Presage
Most makers stop at 8.5 inches, which is where the problem starts for anyone above it. A Seiko Presage owner in New South Wales needed a strap that would close comfortably and still leave a normal-looking tail, so this one was built at 90/145mm — 235mm of strap in total, against roughly 195mm on a standard pair. The leather was black shark skin, with deep green stitching picked to answer the dial rather than the case.
What was built
| Watch | Seiko Presage SRPD37J |
| Leather | Black shark skin |
| Length | 90/145mm (3.5 in / 5.7 in), extra-long |
| Buckle width | 18mm |
| Buckle | Curved style, stainless steel |
| Stitching | Side stitching, deep green |
| Tip | Tapered |
| Spring bars | Quick release |
Why these choices
Extra-long is not simply a longer strap. Adding 40mm to a pair of straps changes where the buckle sits, how many holes you need and how much tail hangs past the keeper, and a strap that is only stretched rather than redrawn ends up with the buckle riding around the side of the wrist. Our extra-long builds cover roughly 8.5 to 12 inches, and the hole spacing is set for that range rather than borrowed from a standard pattern.
Shark skin earns its place on a strap this size. It is among the toughest of the exotics, with a dense, tooth-textured grain, and on a long strap that matters twice over: there is more leather flexing through each wear, and more surface for a weak hide to show creasing across. The grain also breaks up the length visually, which keeps a 235mm strap from looking like a belt.
The deep green side stitching is the detail that makes it look intentional. Matching thread would have been the safe answer, and on a black strap it would also have been invisible. Pulling a color off the dial instead gives the strap a reason to be black without being anonymous — and side stitching keeps that line running the full length rather than stopping at a box near the lugs.
★★★★★
“…I am impressed with the quality of the sharkskin and how it enhances the look of the watch.”
Timothy C. · Verified purchase · Black shark skin strap
Common questions
What length is an extra-long strap for a Seiko Presage?
This one was 90/145mm, which suits a wrist around the low nine inches. Send us your wrist measurement and we will set the two sides and the hole spacing from it rather than guessing.
Is shark skin too stiff for everyday wear?
It is firmer than calf when new and settles with wear. On an extra-long strap that firmness is useful — it stops the long side going floppy where it passes through the keeper.
Every strap is cut to order — allow two to three weeks to delivery. Start with the black shark skin strap, see the sizes in extra-long watch straps, compare the shark skin range, or browse everything made to measure in custom leather watch straps.