Classic men's briefs, kangaroo briefs with a front opening or low-cut models, made of cotton, organic cotton, or microfiber: the shortest cut that never shows under fitted clothing.
A men's brief is the shortest and closest-fitting style: it stops at the groin without going down to the thigh. Two direct consequences are that it never shows under even fitted trousers, and it provides no surface for friction, making it cooler than any other style in hot weather.
The men's kangaroo brief features a covered front opening, inherited from traditional underwear. This is not just a decorative detail: it changes everyday use and remains the main reason for its purchase. The classic brief, without an opening, has a front made from a single piece, often lined for support. Between the two, there is no difference in comfort; it’s simply a matter of preference.
In terms of pure support, yes. The reduced surface area and high cut bring the fabric closer to the body and limit movement, which is what those who find the boxer too loose are looking for. However, the men's brief covers less and can mark the top of the thigh if the elastic is thin. High-cut models enhance this support, while low-cut models mitigate it in favour of comfort.
The same criteria as with other styles apply, with one point added. A wide, flat-stitched waistband remains crucial. The cotton men's brief, made from combed cotton with a few percent of elastane, retains its shape where pure cotton stretches out. And on this specific cut, check the lining of the front: a double-layer cotton lining is what makes the difference between a brief that keeps its shape and one that loses it after a month.