TL; DR — This is a great bra once you get the sizing figured out! Go down one band and up about 3 cups, and you’ll get a flattering, rounded shape. The gray and pink are beautiful as well.
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Onyks is a really pretty bra! The band and strap color is a medium-dark gray, and the cups are gray combined with pink in the mesh and embroidery, as well as white embroidery. The mesh and embroidery are not very thick or stiff, and I haven’t noticed issues with visibility underneath clothing.

The fabric is lightweight, but the seaming provides good support and uplift. The band is very stretchy. The overall shape of the wire is very similar to Ewa Michalak BM bras, but those are firm and run small in the band, whereas this one runs big. If you have a narrow, projected shape and find the BM wires or band to be too firm, then the Onyks might be a good bra to try. I like both styles, but the Onyks has a more lightweight feel to its fabrics, elastics, and wires than the BM. Onyks does not have stretch lace on top of the cup so keep that in mind when deciding what size to buy.

As with most people trying Comexim, I’ve tried a few styles and sizes. When buying from Breakout Bras in the US, they convert to UK sizing and then suggest that you buy 1-2 cups larger than your normal size. With my 34GG - Comexim » Whimsy Floral (CMWHIMSY), that worked well, but I’ve noticed that at certain times of the month, I get quadding on the larger side. So I wanted to try one cup larger (UK 34H / Comexim 75K) this time. Additionally, BoB’s website advises that the band on the Onyks bra is very stretchy, and they recommend sizing down in the band. So I ended up ordering this bra in 32HH (which Bratabase converted to 70L). If I were to order this bra directly from Comexim, I would probably stick with 70L and ask to have the straps moved in just a hair, maybe 1.5 cm.

Definitely a good bra to try if you are the right shape and want to try a 3HC without the padding.

Onyks colorway

Updated on Mar 16, 2021 Flag this

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  That bra is gorgeous!

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  Thanks, learningaboutbras!

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  Great, I ordered this bra like 3 days before your post (from Breakout Bras)

  I actually went down one band size, but now I'm thinking I didn't go up enough cups, haha, we'll see.

  Looks great on you though!

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  I love this bra! I have been eyeing it for a long time but I am worried about the sizing. I have an exchange to do a BB and I think I’ll exchange for this! Thanks for reviewing!

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  BraOdyssey, I hope it works out for you! Comexim sizing can be so tricky. And thanks for the compliment!

  damaries, you’re welcome. I hope it works for you as well.

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