A trunk is a type of men's underwear similar to boxer briefs. Like boxer briefs, trunks cover the mid-section of the body (hence the name "trunk"). They are usually form-fitting like briefs, but some styles are loose fitting like boxer shorts. Trunk briefs extend over the legs like boxer shorts. Trunk briefs have a shorter inseam than regular boxer briefs, covering only the upper thighs and resting below the true waist.
