The SCOTT Helmet Bag is perfect for protecting your helmet from being scuffed and scraped. A ventilation mesh helps to air out the helmet after a day on the track or trail.CONSTRUCTION: H/T 210D Nylon Double R/S W/R, 1,000MM, 800D x 600D.Diamond PVD.COMPOSITION: SHELL FABRIC: 100% Polyamid, LINING: 100% Polyester.VOLUME: 1 helmet.APPROX. WEIGHT (G): 350g.SIZE: One size.FEATURES:Mesh insert for ventilation.Fits all sizes.Neoprene inserts.