The Camp Rockstar Helmet is made from a high density polyethylene shell ideal for keeping you protected without the weight. The hybrid body is made from a durable injection-molded shell design, and for breathability, the Rockstar has 4 side vents.Made with \'One size\' the Camp Helmet is only made in size 53-60cm, and is adjustable between those lengths with a slider and a comfort chin strap. The Rockstar has a hybrid construction, and is also headlamp compatible, making it ideal for caving as well.Dri-Lex inner linerheadlamp compatiblechin strapOne size - size 53-60cm4 side ventsinjection-molded polyethylene shellEN 12492 certifiedweight 390g