Chin strap can be removed and replaced in its entirety, with an XL chin strap available separately if required. Plastic inner lining can be folded, making the helmets more secure as well as stackable. CenterFit adjustment system keeps the helmet nicely centred on the head and can be operated with gloves. Equipped with lateral (side) slots for fitting hearing protectors. Possibility of fitting Petzl protective visors. Features an attachment slot for the Petzl Pixa and Ultra Vario series (head torches). Equipped with four hooks to attach a head torch with elastic strap. This helmet comes with comfortable headband lining as standard. Size adjustable: 53-63 cm. Standard ANSI Z89.1-2009 type I class E, EN 12492, EN 397, EN 50365. Maximum useful life 10 years. 3-year warranty.