TUDOR Black Bay One 31

Marsoni

M251S

$2300.00

Get it in 3 business days with 1 day shipping. Friday, May 29

TUDOR Black Bay One 3131mm steel case, Steel bracelet CASE: 31mm stainless steel case with polished and satin finish BEZEL: Stainless steel bezel with polished and satin finish MOVEMENT: Manufacture Caliber MT5201 (COSC), tuned to 3 +5 seconds Self winding mechanical movement with bidirectional rotor system DIAL: Anthracite WINDING CROWN: Screw down crown with the TUDOR rose in relief CRYSTAL: Flat sapphire crystal WATERPROOFNESS: Waterproof to 100m (330 ft) BRACELET:

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Fast: 2-3 business days
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Exchange/Return Notes

We offer a 30-day return/exchange service after receiving.
Final sale items are not eligible for returns or exchanges.
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I’m a huge fan of Maelreg! I’ve purchased numerous polos, a hoodie, a pair of shirts, and some golf pants, as well as two of these quarter zips (and I currently have a third one in my Christmas list). I love the way they fit and the way they look. I’m a bigger guy too, so it’s not easy to find fashionable “ath-leisure” apparel that doesn’t make me look like a popped can of Pilsbury biscuit dough. The only thing close to a complaint I can think of is that these are a lightweight weight material and the collar doesn’t want to stand up on its own. I wish Maelreg made a medium weight version with a little sturdier of a collar, but that’s just me.

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Reviewed in the United States on December 10, 2025

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David M

Charlottesville, US

★★★★★ 5

Nice fit!

Color: Saxony Blue Melange, Size: X-Large

Great fit. Very comfy. Not too heavy. (Think late spring, early fall weather.) Material and stitching seems high quality. Slightly stretchy fabric. We’ll see how it holds up to wear and washing, but so far so good. I’ve already purchased another in a different color.

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Reviewed in the United States on November 1, 2025

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NicanorTij

Alexandria, US

★★★★★ 5

Fits true to size and good quality

Color: Black Grey Heather, Size: Large

I gave this 5 stars because I was pleasantly surprised by the fit and quality. The zipper is nice, it zips firm, it's not flimsy like a cheap zipper. For reference I am 5'7", athletic build, and 198 pounds. I ordered a size large and it fits perfect. I will buy more for sure.

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Reviewed in the United States on November 9, 2025

Verified Purchase

LCAH

Port Orchard, US

★★★★★ 5

Great fit, excellent material. Will buy more!

Color: Cobalt Heather, Size: Small

Great quarter zip comparable to the high end designer brands. Buttery material, well fitted. Runs a bit big so I sized down and it’s a perfect trim cut fit. Will buy other colors. Would like to see some patterns in addition to the solid colors. I’m 5’10” 165lbs and small size fits perfectly.

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Reviewed in the United States on September 20, 2025

Verified Purchase

Brian C.

San Leandro, US

★★★★★ 5

Perfect for the gym!

Color: Cobalt Heather, Size: XX-Large

I bought 2 (black and blue) and wear them to the gym weekly. They wash & dry very well! They are nice enough for casual wear too. I’ll probably buy a 3rd color soon!

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Reviewed in the United States on April 23, 2026