Lots of Technology, Dynamic and Light Design in a Totally New ProductEGOS will be a new milestone in the collection of Rudy Project performances. The EGOS Helmet Combines Safety, Comfort And Performance.Equipped with a double density EPS core and an innovative internal structure designed to improve ventilation and shock absorption capacity, EGOS combines safety, comfort and performance. A lot of technology and a dynamic and light design in a totally new product.Weight:Size M: 250g, 8.8ozDimension:Size M: (cm 55-59 / 21.7“- 23.2“)