Sometimes you're out in cold rain (or just really cold weather) for several hours. You get home, or you go inside somewhere, and your fingers are so frozen that you cannot operate the standard buckle on your helmet, so you can't even take your helmet off until your fingers thaw out. This is where a Fidlock magnetic buckle comes in super handy. I would actually buy one of these helmets if it came with a magnetic buckle!
Great Helmet, look I want. not the lightest but not too heavy either, it is a MIPS. Magnet bucket wonderful. Keeps glasses put on the back.