WATTS 2.0 bicycle helmet in ABS shell and EPS absorbing material, rigid visor directly integrated in the shell with padding, Compass Fit occipital adjustment system, weight 350g. Non-MIPS model. Equipped with 11 air vents. S: Head size from 52 to 55.5 cm. M : Head size from 55,5 to 59 cm. L : Head size from 59 to 62 cm. We will easily fall for this bike helmet WATTS 2.0 as much for its green color and its elegance as for the sure protection that it will bring us with style and modernity.