Helmets........

[Slowcoach]

After many years of trusty service time has come to choose a new crash helmet, prompted by my reading that technology has moved on and helmets are much lighter these days, greatly beneficial in the case of an accident! But how much lighter? By coincidence a new Demon Tweeks catalogue arrived on my doorstep yesterday and upon looking though I was suprised at how few manufacturers listed the weights. Of the few mentioned the lightest was 1300g (just under 3lb)-that sounded light to me so I thought I'd weigh my 10 year old-it came in at 1900g (just a whisker over 4lb) - any ideas about what weights are available and does it make THAT much difference.
One other thing - most were British Standard,some were FIA approved and some FR/RAC and one was just SA2000 - am I right to assume the FIA is the best to go for ?:confused: