Working Cuff (n,): a cuffs that has buttons that can unbutton allowing one to roll up the jacket sleeves.
Historically, there was a time when men wore suits and sport coats everyday and for all occasions, even when delivering babies. This is where the popular term “surgeon’s cuffs” originated from as many surgeons, rightfully so, need the ability to roll up their sleeves while working on various patients. Now granted you probably won’t be rolling up your suit sleeves to deliver a baby anytime soon, but nevertheless this is a detail you’ll want to consider when buying your next suit or jacket.
It is much easier to machine sew the button holes closed, rather than take the time to hand sew up to 4 button holes on the cuff which is why a working cuff is a hallmark detail associated with a custom or high quality suits.
Selvedge (n,): or “self-edge” is the edge of woven fabric finished to prevent unraveling which is achieved through a tighter, more dense weave.
Selvedge denim refers to a unique type of selvage that is made by means of using one continuous cross-yarn (the weft), which is passed back and forth through the vertical warp beams. This is traditionally finished at both edges with a contrasting warp (most commonly red); that is why this type of denim is sometimes referred to as “red selvedge.” This method of weaving the selvage is possible only when using a shuttle loom.
Shuttle looms weave a narrower 30-inch fabric, which is on average half the width of modern shuttleless Sulzer looms. Consequently a longer piece of fabric is required to make a pair of jeans from selvedge denim (approximately three yards). – Wikipedia