Helmet bicycle meteor ks07 apper size m 52-56 cm dark blue 24897 & nbsp; helmet meteor intended for children and youth allows on safe on on bike, rollers or skateboard. Interior absorbing shocks. System ventilation Air FLOW W form 12 HOLE & OACUTE; W ventilation dba Op. Specific air air. Spray QUICK-Releade Facilitates Dressing Dressing and removal. Adjusting head-lock facilitates no. Removable elements racing & oacute; łki. & nbsp; data technical: & middot; material shells outer: PVC & middot; in ew inside material absorbing: EPS & middot; sponge racing & oacute; łka - insulates head from shells, providing comfort u Naturaling. Thanks her helmet very good holds & middot; certificate - product compatible with requirements directors WS 89/686/EEC I Norms EN 1078 & Middot; Size / Obr & Oacute; D head: M / 52-56 cm & middot; technology: out-minor & nbsp;