The composition of the new Sabelt underwear line makes the clothing light, resistant to flame, and very comfortable. The use of Lenzing FR® fiber, which is made of a natural material that keeps the body dry and cool, together with the modacrylic and elastane, which make the garments totally stretchy, make this line the most convenient and the most innovative across its range. The two-way stretch warp knit seamless fabric has a high wear resistance and is very light. FIA Approved.