A Shirt Built Around The Watch.
The Sinai Collection is the first line of dress shirts and jackets engineered around the modern gentleman's most prized accessory — his timepiece. At its center is the patent-pending Watch Notch™: a precision-cut triangular opening, tailored directly into the cuff above the watch face, that reveals the dial while concealing the band beneath crisp, structured fabric.
Engineered For The Details
That Define A Gentleman.
Displays Your Watch Perfectly
A triangular notch frames the dial as a window — never a distraction. Your timepiece stays in view, even when your cuff is buttoned.
Conceals The Watch Band
The strap rests entirely beneath the cuff. Only the watch face is seen — clean, intentional, refined.
Eliminates Cuff Bunching
Structured cuff architecture lays flat against the wrist with zero compromise to the silhouette of your shirt or jacket.
Precision Tailored
Cut, sewn, and finished by hand to exacting tolerances. Seams aligned to within a millimeter on every piece.
Built For Luxury Timepieces
Engineered around the proportions of premier watch houses — from 36mm dress watches to 44mm sport models.
Patent-Pending Innovation
An exclusive SIRAGUSA design — protected, proprietary, and found nowhere else in menswear.
More Than A Shirt. A Standard.
Every piece in the Sinai Collection is constructed in limited runs, using long-staple cotton, mother-of-pearl buttons, and hand-finished plackets. Each shirt and jacket is built to elevate the timepiece it surrounds — and to last as long as the watch it was made for.
Premium Materials
Long-staple cotton, mother-of-pearl buttons, reinforced interlinings — sourced for longevity and feel.
Hand-Tailored
Finished by master tailors using time-honored European technique. Pressed, inspected, signed off.
Limited Release
Made in small batches under the SIRAGUSA name. Once a run sells through, it is retired — never reprinted.
Shop The Sinai Collection
A curated edit of dress shirts and jackets engineered around the watch you've chosen to wear. Explore the full collection and find the piece that frames your timepiece best.
View The Sinai CollectionYou'll Never Look At Dress Shirts The Same Again.
Once you've felt a structured cuff frame your watch — once you've watched the band disappear beneath crisp, intentional tailoring — the ordinary dress shirt feels exactly that. Ordinary.
Shop The Sinai Collection