... helmet 2,children bicycle helment 3,26 air vents 4,factory direct price ,frosted helmet Bicycle Helmet1. Comprehensive IntroductionName Bicycle HelmetModel ... AdvantagesTUV,CE certification;26 air vents, good ventilateBuilt-in in-mold technique , the cover is very goodfasten elastic could adjust, sweat ... cycling confortable Magic Velcro—sweat absorption 26 air vents In-mold Bicycle Helmet