Cartier Tank Must Strap Guide
The Cartier Tank Must uses three case-specific lug widths — 16, 19 and 23 mm. Find yours below, then compare 13 leathers photographed on the watch itself.
Shop Tank Must straps → Find my size ↓
“Wonderful bespoked experience - this strap is exquisite.”
Find your Tank Must strap size
References are the retail numbers on your papers or receipt (common ones, not exhaustive) — the case-back itself shows a short case code like 4323. Every strap tapers to the matching buckle width automatically; you only pick the lug width.
Not sure? Measure it
Measure the gap between the lugs, inside edge to inside edge. The sizes are 3–4 mm apart, so a ruler is enough: 16, 19 or 23 mm. (Automatic movement = XL; charges from light = SolarBeat.)
Choose your leather
All 13 photographed on the Tank Must, not mocked up. Tap one to open the configurator with that leather selected — you'll choose your size and see prices in your currency there.
Dress & formal
Everyday classics
Soft & casual — suede
Match it to your dial
| Your dial | Tonal (blends in) | Contrast (stands out) |
|---|---|---|
| Silver / classic (incl. SolarBeat) | Epsom Gris Meyer, Suede Black | Crocodile Dark Blue, Shell Cordovan Cognac |
| Blue lacquer | Suede Midnight Blue | Epsom Gris Meyer, Buttero Brown |
| Green lacquer | Alran Basil | Buttero Brown, Suede Whisky |
| Red lacquer | Suede Maroon | Suede Black, Shell Cordovan Black |
Extra-short to 12-inch wrists — the fit calculator finds your length.
Quick-release bars included — no tools. Keep your Cartier buckle or deployant, or add a Cartier-style clasp in gold, stainless steel or rose gold.
Allow 2–3 weeks from order to your door, worldwide.
Tank Must strap questions
Which strap fits the Tank Must SolarBeat?
The same as the quartz models: SolarBeat Small takes the 16 mm strap, SolarBeat Large takes the 19 mm. There is no SolarBeat XL — if you have the automatic Extra-Large, choose 23 mm.
My Tank Must is the vintage Must de Cartier — will these fit?
The sizes above cover the 2021-onward Tank Must. Vintage Must de Cartier lug widths vary by reference (roughly 15–20 mm) — order any leather and write your lug width in the order notes, and we cut it to size. Email us a case-back photo if you're not sure.
Can I keep my Cartier buckle or deployant clasp?
Yes. Choose "I'll use my own buckle" in the configurator — it pre-fills the clamp width for your size, and you can adjust it if yours differs. The strap tail is cut to fit it exactly.
How long until it arrives?
Production takes 3–5 business days, since each strap is made when you order it. Allow 2–3 weeks from order to delivery, worldwide.
Will these fit a Tank Solo or Tank Louis?
Those models use different lug widths, so order from their own pages — every model is in our Cartier collection.
Cartier, Tank Must and SolarBeat are trademarks of Cartier. VGreen is an independent workshop; our straps are aftermarket accessories made to fit these watches and are not affiliated with or endorsed by Cartier.