CUBE HELMET ROOK SILVER MINT M (52-57)trail helmet for mountain bikersshell extends over the back of the head for added protection18 large ventsimproved ventilation channelsremovable visorSILC 180 Fit System with height and width adjustment can be fine-tuned with one hand for a perfect fitdouble-in-mould constructionflat dividers for optimised webbing guidingX-Lock mounting systemremovablewashable padsother pad thicknesses availablepadded ratchet chin closureNatural Fit conceptmatte finishLook great and feel great! You're lost in thought about the right shock set-up, tyre pressures and whether you've got enough food and drink on board for the next few hours – so the last thing you want to worry about is a badly fitting helmet. Designed in conjunction with the Natural Fit brand, the ROOK Helmet can be adjusted in the blink of an eye for the perfect fit. It's the ideal choice for everything from long race days to a quick after-work cruise.Specifications Colour: silver mint Material: EPS double-in-mould Size: M (52-57) - L (57-62) Weight: 260 g (with visor)