Possible Clues:

• They roll up as hard work begins!
• Arm coverings
• Top record holders - they're as long as one's arms!
• Being in these one has no jacket on
• If one's in these no coat is being worn
• They'll roll up for work, though they're not often seen when it's cold
• Being in these is being without jacket
• Concealment for arms in these informally covered
• (In) jacketless state