This fits your .
Lazer Baby on Board (BOB) Helmets are specifically designed for children riding in trailers.Comfit3 retention systemSuper soft fit pads are easy to remove and cleanFlat back rests easily against back wall of trailerStraps with reflective material for extra visibilitySpecial padding to keep chin cool and comfortable; total of 6 vents throughoutCPSC one plus certificationFits 46-52cmItem SpecificationsColorSquaresWeight277Gender/AgeToddlerSizeOne SizeHelmet StyleRecreationDefined ColorMulti-ColorVisor IncludedNoMulti ImpactNoMaximum Head Circumference52Minimum Head Circumference46Rotational ProtectionNo
LAZER BOB Infant Helmet: Black with Multi-Color Squares One Size