23mm Leather Strap for Casio Pro Trek White Mountaineering

A 23mm lug width is the kind of spec that ends a strap search before it starts — catalogs jump from 22mm to 24mm and leave watches like the Casio Pro Trek White Mountaineering PRWB1000WM-1 stranded on their factory band. This order from Ontario fixed that with a 23mm strap for the Casio Pro Trek, cut in brown Minerva Box calf to the width the case actually measures.

The build

Why these choices

The width is the whole story. A 22mm strap on 23mm lugs leaves a visible gap on each side and lets the strap walk on the spring bar; a 24mm strap has to be forced in and chews its own edges. Cutting to a true 23mm — noted plainly on the order — costs nothing in our configurator, where lug widths run from 8mm to 30mm. The 3mm taper down to a 20mm buckle keeps the strap from looking slab-sided on the wrist.

Minerva Box is an interesting call for a collaboration tool watch, and a good one. It is box calf from Tannerie Minerva — smooth and firm — so the strap holds a clean, structured line that suits a design-led piece like the White Mountaineering Pro Trek rather than going slouchy. A fashion collab gets worn as much for how it reads as what it does, and a smooth brown calf with a rose gold buckle moves the watch from trailhead to street without the foam-and-resin look of the original band. More of the hide is in our Minerva Box strap collection, alongside the broader brown leather watch strap collection; this build started from the brown Minerva Box strap page.

Quick release spring bars finish it sensibly — a collab piece that alternates between its original band and leather should swap in seconds, without a tool near the case.

★★★★★

“Fast delivery. Quality is top notch. Requested to have a bigger lug hole to fit the screw pin to my watch. It fits perfectly like a globe. Very pleased…”

Jenson W. · Brown Minerva Box strap

Common questions

Where do I find a 23mm strap for a Casio Pro Trek White Mountaineering?

Measure between the lugs to confirm your reference takes 23mm, then enter the width in the configurator on any strap in our custom leather watch strap collection. Odd widths are cut to order, not adapted from stock.

Should an odd lug width taper to a standard buckle?

Yes — buckles are easiest to source in even sizes, so tapering 23mm lugs to a 20mm buckle (as this order did) keeps future buckle swaps simple while preserving the fit at the case.

Made to order — allow 2–3 weeks to delivery.