5 year old bike helmet size Radio Flyer Toddler and Children's Helmet, CPSC Safety Certified, Universal Kids Bicycle Safety Helmet, Ages 2–5, Multiple Colors Available : Sports & Outdoors This lightweight helmet also Choose Option:Rage Full-Face - Matte Black/Blue Large Excision Bell Spark 2 MIPS

5 year old bike helmet size Radio Flyer Toddler and Children's Helmet, CPSC Safety Certified, Universal Kids Bicycle Safety Helmet, Ages 2–5, Multiple Colors Available : Sports & Outdoors This lightweight helmet also Choose Option:Rage Full-Face - Matte Black/Blue Large Excision Bell Spark 2 MIPS

Bell Spark 2 MIPS Helmet Medium/Large Matte Light Blue

For this collection, the main frame choices are compact fat tire, step-over, step-through, and folding

Excision

Choose Option:Rage Full-Face - Matte Black/Blue Large

All are carry-on compatible with most major airlines (you may want to double-check with budget carriers, particularly in Europe)

This lightweight helmet also features an integrated visor and carefully placed vents to keep your child cool and comfortable