Strap for Equestrian Horseshoe 34 Diamond / MOP

The lug width of the Longines Equestrian L6.138.0.87.2 is precisely 16 millimetres. This specific measurement reflects the proportions of the 34mm case and determines exclusive compatibility with straps constructed for that width. Measuring the lugs is straightforward: using a digital calliper, position the instrument between the outer edges of the lug at the base. The precision of 16mm is critical: straps of 18mm or larger, even marginally oversized, will not seat correctly in the case attachments.

The most recommended strap material is superior-grade alligator, preferably vegetable-tanned, which emphasises the watch's formal character and develops natural patina over time. Alternatively, fine calf or shell cordovan offer comfort and aesthetic versatility. For informal sporting contexts, a sturdy canvas NATO or vulcanised rubber strap reinstates the original equestrian functional character. Choice depends on primary usage context: formal occasions, daily wear, sporting activities.

Strap replacement occurs through removal of the attachment bars (spring bars). Using a dedicated tool or a sophisticated lever-like instrument, apply lateral pressure on the internal spring of the bar to release the mechanism and slide the bar out of its seat. Once both bars are liberated, the old strap separates from the case. Installation of the new strap replicates the reverse process: bars inserted into the case attachments, pressure to release the spring pin, secure fastening. A straightforward operation requiring care to avoid damaging the case lugs.

Any strap with a 16-millimetre lug width is technically compatible. Milano Straps provides a curated selection of 16mm straps in alligator, calf, vegetable-tanned leather, shell cordovan, NATO and rubber. Compatibility is guaranteed by lug width: the essential requirement is that the strap has been specifically constructed for 16mm, not adapted from different widths. For bespoke requirements, the Casati Milano atelier creates personalised custom straps in leather and material of your choosing.

Lifespan varies considerably depending on material grade, tanning method and frequency of use. A superior-grade vegetable-tanned alligator strap typically endures 5-7 years with regular wear, developing distinguished patina. Fine calf resists approximately 3-5 years before showing wear at the edges. Shell cordovan, an extraordinarily resilient material, may last 8-10 years. Vulcanised rubber is virtually indefinite. All Milano Straps and Casati Milano straps include an 18-month warranty against manufacturing defects. Natural ageing and patina development are not covered by warranty but represent the desired aesthetic evolution of the piece.