When youre looking for a performance helmet no doubt weight fit and ventilation are at the top of your list of priorities the endura airshell ticks all of those boxes and morethe use of glass fibrecarbon fibre bridges depending on colour of helmet reinforces the structure of the helmet which means that it can be made lighter whilst still exceeding the ce safety standard en10782012 the sm sized airshell tips the scales at a featherweight 230g so youll hardly notice that its there t