What is "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 (when used in snowboarding or skiing) and hydrodynamics (when used in swimming and other water sports), or it is a tight fitting collared jumpsuit similar to coveralls.