The EDZ Helmet liner is ideal for motorcycle helmets. If you don't like putting your head into a soggy helmet these are a worthwhile investment and they help keep your helmet clean. Sports base layer wicking fabric wicks away moisture cools and insulates so they keep your head cool in summer but warm in winter and this is very lightweight and thin so you won't feel a difference. A worthwhile investment! This is also machine washable and quick-drying!