My only advice is to get in the pool and swim most of time.

That way, it will look like you're really wearing it for a swim suit and not for exhibitionism.

Otherwise, go for it!!! :D

You can
 

You can wear it everywhere guy
it s simple cut and very sportive

Looks great, you can wear that no problem. Where did you get it from?

Thanks for all guys ! You're great.
So I've swum with it today, 2000m in outdoor pool, and no problem at all.
I love this suit, very comfortable and great tan lines.
You can find it on aliexpress, for just 4 euros. I have the white one too which is beautiful, but a little transparent in the back. :)

Looks fine to me to be worn in public. Full coverage and a dark color; plus it looks perfect on you. Doesn't look to small for public wear. Wear it proudly!
Also I would not worry about your white suit being transparent in the rear, it is normal and to me not an issue. I have several white suits which are like this and I never have had an issue wearing them in public.

The 1" Desmiit swim brief has a draining mesh built into the rear seam, other swimmers may see this and wonder what it is for.
During swimming even if the waist cord is tied this low cut brief may ride low on your buttocks showing a some tunnelling. The tunnel scoops in water and the draining mesh lets it escape.
If you and the other swimmers can accept a bit of rear cleavage then wear these in a public pool.
You'll be wearing your 1" Desmiit swim briefs alongside guys wearing board shorts over their knees, one of you will look ridiculous, so make sure you can actually swim and leave the board shorts guys behind.

Yes, there is mesh in the rear seam, but it is really thin. So I don't think other swimmers can see anything through it. It is black in black I would say :D
I have verified it before swimming with it of course.
The mesh is a good thing because water can going out of the suit if necessary.

no problem at all wearing those. I thought the desmit had the same cut as some of the seobeans i wear. But it appears the desmit covers more in the rear.

I've never had an issue with my seobean in public so the desmit you have on wont be any problem.

Can't see why not
 

I regularly see squadies wearing briefs this low cut at the pool I use. I have a similr pair, and they are very low cut, but you've got the body for it, so no reason to be shy!

By squaddies do you mean British Army Infantrymen ?