If you are looking for a fuller style brief that sits lower on the legs than a bikini or traditional brief then the JOR Vintage Brief is the men's underwear style you have been looking for.
The JOR Vintage Briefs is a full brief cut that is longer in the leg than many brief cuts it's reminiscent of brief cuts from the 70's and 80's . It has a low-rise waist and gives full coverage front and rear. It sits higher on the leg than a trunk cut to eliminate bunching up of material and the contoured pouch is comfortable and supportive.
These briefs come in a retro style pattern that seems to keep shifting as you look at it. They are made 78% Nylon / 22% Spandex so are durable with a good amount of stretch.
This fuller nature of this brief is similar to trunk style men's underwear so is great for the gym or other types of physical activity or just as all day comfortable pair of mens' briefs.