Wind chill has a dramatic effect on the loss of body heat from the skin, so a fabric that blocks the wind is vitally important when you’re riding a motorbike, not only to stay comfortable but also to keep alert. The RST TWB fabric offers more than just wind protection; the ergonomic design is enhanced by a four-way stretch material with stretch and compression properties. This helps keep the muscles warm, reducing muscle strain and rider fatigue. The breathability of TWB also keeps you comfortable and as warm as possible. As with all RST products, RST TWB garments have been tested by our development team in the toughest weather the UK has to offer.