HJC F100 Solid 頭盔

My usual size is M, so i bought size M. The cheekpad is really tight when fully close. After a month, the pads has settled in, but it's still too tight for me. Long rides puts a pressure on my jaw and head. I suggest if you want to buy one, test it first or go 1 size up.

Small air leaks in from the visor. During a long cold ride, it starts to annoy me. Rainy weather no leak.

Visor sometimes wont fully close/seal (crooked) unless you push it down simultaneously (the visor locking mechanism is 'independent')

Sun visor sometimes stuck/not going down one side thus leading to stuck.

Comfortable, light, excellent peripheral vision. Despite having only two air vents they are surprisingly effective so helps to keep cool in the Queensland spring, plus the rotating chin bar is an additional bonus at low speeds. Very clever mechanism to remove and clean the visor, comes with Pinlock included at time of purchase. Would I buy another? I already have.

A very cool helmet — the only helmet of this type that fit my head perfectly (it’s an elongated shape with not the shortest chin). Right after buying it, I went on a 9-day trip covering over 5,000 km — perfect.
One small issue: almost immediately, the built-in sun visor started sticking. For me, it’s not a big problem, but it’s nicer when you can retract it without using your hand (it sticks on the right side when lowering the visor).
I rode for several days in the rain — completely dry, no leaks at all.
I think the flip-back helmet type is the best invention for traveling and for everyday convenience. Despite the visor issue, I highly recommend it.