Using the Trango Cirrus Helmet is easy. First, adjust the fit using the fast ratchet system to make sure it sits snugly on your head. You can also use the two fit systems to fine - tune the fit. When it's time to adjust the strap, just use the magnetic Fidlock buckle for a quick and easy adjustment. For winter use, it provides great protection from side and back impacts. In summer, the 10 vents will keep you cool. As for maintenance, the washable lining can be removed and washed regularly to keep the helmet fresh. When not in use, store it in a cool and dry place. Avoid exposing it to extreme heat or sharp objects that could damage the shell.