A rolag (Scottish Gaelic: roileag) is a roll of fibre generally used to spin woollen yarn. A rolag is created by first carding the fibre, using handcards, and then by gently rolling the fibre off  the cards.
A rolag (Scottish Gaelic: roileag) refers to a cylindrical bundle of fibers typically employed in producing woolen thread. The process begins with carding the fibers using handcards, followed by carefully unwinding them from the cards into a compact roll.