Speedsuit
A speedsuit is an item of unisex exercise attire or an industrial uniform used when quick clothing changes are necessary. It is either a single piece of clothing which tightly fits the torso and, optionally, varying amounts of the arms and legs; overall, it is similar to a leotard, though intentionally made especially tight and constricting to hug the body for varying purposes of warmth and hydrodynamics, or it is a tight fitting collared jumpsuit similar to coveralls.