With helmets, I won't even buy them online - because I can't fit check them, and reputable retailers won't take returns of helmets. Its cheaper to buy a helmet

With helmets, I won't even buy them online - because I can't fit check them, and reputable retailers won't take returns of helmets. Its cheaper to buy a helmet online, but it is generally better to pay the extra 10-15% and try the fucking thing on in a shop, ensure it fits, etc. Some manufacturers (Mammut, for example) only really offer one or two sizes, others offer a variety.