Thumb Score: -1

Basecamp Cycling via Amazon [amazon.com] has Kids Adjustable Safety Bike Helmet, CPC&CE Certified on sale for $ 18.14 when you apply promotion code APSNZ6XW at checkout. Shipping is free.

Details:
Fits head sizes: 48-52 cm / 18.9”-20.47′
Easy-to-use chin strap with safety buckle
4 vents to keep little heads cool
Complies with the U.S CPC Safety Standard