Kendall T.wrote a review of Petzl Sirocco Helmet on October 30, 2017
Familiarity: I've put it through the wringer
Love this helmet, except for two flaws:
Flaw 1: Only slightly annoying, it's a little more bulky (height-wise) than my old Half Dome helmet, so I bump my head climbing under roofs.
Flaw 2: Extremely annoying, the buckle is magnetic and picks up all kinds of rocks, so sometimes it doesn't unlatch or latch correctly.
Otherwise it's super comfortable and lightweight. The extra durability of having the lining on top is nice, because the foam can be damaged by dragging it against rock (but this is expected)