The offered Twiga Glasswool Insulation is thermal insulation material made from glass fibers. The fibers are first melted & then spun to create a fine, wool-like material. This material is then formed into batts, blankets, or rolls that are used to insulate buildings & other structures. It has excellent thermal insulation properties, which means it helps to keep buildings warm in winter & cool in summer. Twiga Glasswool Insulation also has good sound insulation properties, making it ideal for use in walls & ceilings to reduce noise transmission.