Square Leg
Men's square leg swimsuits cut between a swim brief and a jammer, with a 3-inch to 5-inch inseam and form-fitting compression fabric. The cut delivers brief-style mobility with added thigh coverage, the standard pick for lap swim, water aerobics, water polo training, and recreational pool use. Top brands include Speedo, TYR, Nike, Sporti, Adidas, Dolfin, and Funky Trunks, sized 22 through 40 in chlorine-resistant polyester.
A men's square leg swimsuit is a form-fitting boxer-style swim cut with a horizontal hem line across the upper thigh, sitting between the bikini-cut swim brief and the longer jammer. The cut delivers the support and minimal drag of a swim brief with the added thigh coverage of a jammer, the option for swimmers who want compression performance without the bikini-cut profile.
Cut Profile and Coverage
Inseam runs 3 inches to 5 inches with a straight horizontal hem at the upper thigh, distinct from the curved hem of a swim brief and the knee-length cut of a jammer. The waistband sits at the natural waist with internal drawcord adjustment on most styles. The cut is sometimes called square cut, boxer brief swim, or Euro-cut swim.
Construction and Fabric
Chlorine-resistant polyester construction lasts longer than nylon-spandex in pool environments. Compression fabric reduces drag during lap swim and pool training. Mesh-lined front panel adds support without restricting movement.
Use Cases and Related Cuts
The cut works for lap swim, water aerobics, water polo training, and recreational pool use. For the shorter bikini-cut version, see men's swim briefs. For the longer knee-length cut, see men's swim jammers. For the deeper buying guide across all men's lap swim cuts, see how to choose a men's lap swimming suit.
