Custom Leather Strap for Cartier Tank Must

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 Tank Must 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.

Tank Must sizes and lug widths: Small / SolarBeat Small — 16mm; Large / SolarBeat Large — 19mm; XL — 23mm. The reference number is usually engraved on the case back. Just pick your size in the configurator. Vintage or unlisted Tank Must references vary — please contact us before you order with your reference, a case-back photo and a side-profile photo showing the lug-to-case joint, and we'll confirm the fit.

Modern Tank Must (2021+) has a discreet quick-release groove cut into the case lug for tool-less strap swaps — our straps ship with quick-release spring bars compatible with it. Vintage Tank Must uses standard spring bars and a normal spring-bar-tool install. Tell us your reference when ordering, or send a photo and we'll fit the correct bars.

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 aim to reply within 48 hours. Once we have confirmed the fit, we will tell you which Lug width 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 Tank Must 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.