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Briefs vs Trunks: Which Men's Underwear Is Right for You?

Briefs or trunks? The real differences in fit, support and comfort — and how to choose for work, gym and hot weather.

By the SFIVA team · 25 September 2026

Briefs vs Trunks: Which Men's Underwear Is Right for You?

Most men pick one style in their teens and never question it. It is worth a second look.

Briefs

The classic mid-rise brief has no leg, so it is the coolest option in heat and the least visible under loose shalwar. It offers firm support and suits men who walk and move a lot in the day.

Trunks

Trunks — short-leg boxer briefs — add a little leg that stops the fabric riding up and prevents chafing between the thighs. They look sharp, stay put at the gym and suit fitted trousers.

Which to choose

  • Hot days and long walks: briefs.
  • Gym, cricket, long drives: trunks.
  • Fitted trousers: trunks, for a smooth line.
  • Can't decide: keep both — a pack of each covers the week.

What matters more than the style

Fabric and waistband. Breathable cotton jersey keeps you dry; a wide, soft waistband stays flat without digging in. Flat seams stop rubbing.

SFIVA Pure Cotton Underwear

Ours come as briefs or trunks in soft stretch cotton with a wide waistband woven with SFIVA in gold, in an Assorted pack (black, navy, grey) or All Black.

Shop SFIVA underwear

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