Custom Leather Strap for Cartier Santos 100

Yes, if it's a Cartier deployant made for a leather strap: we cut both strap ends to the clasp width you select, so you keep the clasp you already own. Most aftermarket straps ship with a pin buckle that orphans your Cartier deployant; we don't. Choose “I'll use my own buckle/clasp” in the configurator, measure the inside width of your clasp where the strap attaches, and select it under Buckle-end width (mm). For listed Santos 100 references we pre-fill the usual width as a starting point. Upload a photo of your clasp too; if you're unsure of the width, say so in the Note and we'll confirm it with you before production. A folding clasp built into a metal bracelet can't be moved to a leather strap; if that's what your watch came with, choose one of our Cartier-style deployants or a pin buckle.

We can source a Cartier-style deployant clasp for you — pick one of the Cartier-style deployant options under Choose a buckle (Gold, Steel or Rose gold; the price is shown on each option). They aren't made in every clasp width, so they only appear for the sizes they fit; for other sizes, choose one of our pin buckles or use your own clasp. You can also choose a standard pin buckle on any size if you prefer a traditional buckle-and-tang strap.

Santos 100 lug widths: 20mm — Medium; 23mm — Large / XL; 24.5mm — XL Chronograph (2740). Some sizes are close but not interchangeable, so if you're not sure, measure the gap between your lugs or send us your reference and a side-profile photo and we'll confirm before cutting.

Two things make the Santos 100 specific. The leather end is shaped to sit flush against the case — an integrated fit with no gap, like the original bracelet. And it attaches with screw bars, not spring bars: a screw rod runs through the strap end into each lug. We don't include the screw bars — reuse the pair from your current Santos 100 strap, or buy an inexpensive set online.

Please contact us before you order. Email us your reference, a side-profile photo of your watch showing the lug-to-case joint, and the case-back if the reference is printed there. We confirm the fit with you within one business day and tell you which Model option to choose. When you order, if you're using your own buckle or clasp, choose “I'll use my own buckle/clasp”, upload a photo under Buckle photo and pick the width under Buckle-end width (mm).

Yes. Every strap is made to order. Standard options cover wrist ranges from 5.0 to 8.5 inches at no extra charge; extra-long options go up to 12 inches for the surcharge shown in the Wrist size list. Long-wrist Santos 100 owners are a size Cartier's own straps don't offer. Choose your wrist range and we make the strap for that range, your case size and your buckle or clasp. For a wrist under 5 inches, or if you already know the strap lengths you want, choose “Custom - specify in Note” and write your wrist measurement (cm or inches), or both strap lengths in mm (buckle end / tail end, leather only, measured from the watch end), in the Note box.

Production takes 3–5 business days in our workshop. For Canada and the US, allow two to three weeks from order to arrival with standard shipping; priority shipping is available at checkout. Other countries can take longer depending on the destination, and checkout shows an estimated delivery time for your address. We're a Canadian company and ship worldwide.

We do not offer refunds for preference returns of made-to-order leather straps. If your strap has a manufacturing defect or we made it differently from the agreed specifications, we will remake it. If we confirmed the fit with you in writing and the strap does not fit because of our fitment error, we will remake it. See our refund policy for the full terms, and contact customer service with your order number if you have a concern.