Ostrich Leg Strap for Cartier Tank Solo Large
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A Cartier Tank Solo Large is a formal case shape, and most owners default to black or brown when the factory strap wears out. This order from California went a different way: moss green ostrich leg, in a shorter than standard length, on a plain stainless buckle. The result stays dressy without repeating what the watch already came with.
Build specification
| Watch | Cartier Tank Solo Large, Ref. WSTA0106 |
| Leather | Moss green ostrich leg |
| Length | 70 mm / 115 mm (2.8 in / 4.5 in) |
| Buckle width | 16 mm |
| Buckle | Classic, stainless steel |
| Spring bars | Regular |
Why these choices

Ostrich leg is the scaled section of the hide rather than the round body skin, so its grain is a run of small overlapping scales instead of the raised quill bumps people associate with ostrich. That matters on a Tank. The case is a clean rectangle with very little going on, and a fine scaled grain gives the strap some depth up close while keeping the outline flat and formal.
Moss green is the choice that does the real work. It is dark enough to read as a neutral from a distance, so it behaves like a black or brown strap in a meeting, but it separates from the steel case in a way a default color does not. Green is also one of the few colors that sits comfortably under both silver and gold hardware, which is worth knowing before you commit.

The length is the quiet detail. At 70 mm and 115 mm, this strap is shorter than our standard on both sides. A shorter long end means the tail stops closer to the keeper instead of running past it, which is what you want on a small rectangular case where a long overhanging tail looks out of proportion. The buckle was specified at 16 mm with regular spring bars, so the strap is removed with a tool rather than a quick release lever.

★★★★★
“Gives the Mark Time 1.2 (in bronze/green) quite an exotic look. That’s the second strap I’ve gotten from you and I’m nearly certain a third order will be on the way next month.”
Michael H. · Verified purchase · Moss green ostrich leg strap
Questions about this build
How do I order an ostrich leg strap for a Cartier Tank Solo in a custom length?
Measure your wrist, then pick the short and long end lengths at order time rather than accepting a stock pair. This build used 70 mm and 115 mm. Straps are made to order, so allow 2 to 3 weeks to delivery.
Is green too much for a dress watch?
A dark green like moss reads as a neutral at conversational distance and only shows its color in direct light. If you want the texture without the color, the same leather is available in black and brown.
Build one for your Cartier
Every length, buckle and leather on this build was chosen at order time. Start from the moss green ostrich leg strap, or look through our Cartier watch straps, the wider ostrich leather range, and our other green leather straps.