The black bonnet seals any helmet in no time at all - and perhaps even makes it a little more windproof. In combination with a helmet cap, the head remains well protected even on cold and wet days. You only need to be careful when putting it on helmets with sharp edges - the silicone material could tear.
PLUS Flexible weather protection
MINUS Sensitive to sharp edges
Reference/Info www.bbbcycling.com
Price 20 Euro