Can’t tell anything about the brands of the underwear here, but I do appreciate the overall “outfit”! It’s a great shade of red, and I’m suspicious that the plain t-shirt and plain briefs might even be from the same producer because of how well they match.

Also can’t see much of the briefs here, but the pouch has a nice shape (and is being filled out nicely here!)

As a final and somewhat unrelated note, I gotta give some props to the model-photographer here; he picked a great spot for lighting, giving some great contrast and setting up the overall mood of the photograph – not quite brooding or moody, but there’s a definite weight to it. The angle of the photo adds to that somewhat-unsettled ambiance, and the simplicity of the background works well with the simplicity of the outfit.