AliExpress Find:
Power Mesh Tights with Solid Panel on Side.
Fit: I wear L in N2N, I purchased XL, and it fit me Perfectly, if I wanted to go Smaller, I probably could, & because the Power Mesh is Super Thin & Stretchy, If you have a smaller ass/legs, you could probably get your Normal Size, or even size down, so it's a super tight fit.
The Seam does go up your Ass Crack, which I like. Lol
I have every Color, + one extra in Light Gray, they're that good.
One issue, if you're taller, I would say 5'9 & above, the Inseam MAY not reach down to your Ankles, but they still look really good.
Also, They're available in a shorter Style.
Long Tights
Shorter Version
If you want to Search it on AliExpress: Breathable Mesh Tights Men Sport.
I have also seen them on Amazon for a Higher Price, but with Prime Shipping.