This latest version of the Stilo ST5 FN Zero helmet offers the pinnacle of formula racing helmets. This 'Zero' version is constructed from high tensile autoclaved carbon fibre for exceptional strength and ultra-light weight (it is the lightest FIA approved helmet available). These properties allow this helmet to surpass the latest FIA 8860-2018 safety standard with unparalleled levels of impact and puncture resistance.Electronics and side ports deleted for optimum weight saving Earmuffs: Certified for track use as they offer excellent isolation from external noises. They are removable and not fitted with speakers, which are not permitted on circuit: communication is always carried out through ear plugs (available separately). The pressure on the head from the earmuffs can be adjusted by changing the special foam rubber pads (supplied) positioned between the earmuff and the helmet. Double Shell: Two different shells: one for small sizes (XS, S, M and L-59) and one for large sizes (L-60,