Ventilation on this bucket is very good (hence the name "Inhaler" I guess.) The helmet fits fine - the cage that comes with the size small is a small as well, so your noggin may fit the helmet but the cage might not be right.The one that I received was already three years old and came with three years worth of dirt on it. So the expiration is going to come sooner than expected - parents beware if you're buying for a kid and expect them to have it and be "legal" for USA Hockey for a full six seasons. Won't be a problem for adult leagues, but for kids you might want to try something else. At any rate I would have expected a "fresh" product since I paid full price on it. However, the fit and ventilation are good, so I'll clean it up and use it regardless.
This is great helmet. It's very comfortable. I have a larger head and this model fits me best. The added sweat bands are an added plus. Pro model looks with the white ear slings. Mission is a Bauer brand, so this helmet is a more breathable version of a Bauer lid.