Be safe and prepared for anything with this ultimate BMX Accessories Set. This pack includes a pro-style BMX helmet, bike lock, bike pump and an easily attachable skull light, with glowing eyes; Your kids can bike in style and stay safe all in one. Batteries required for the bike lights 2 x 220 mah lithium 2032 batteries. Its safety first, but style comes a close second. 11 air vents. Adjustable straps. Head size from 56 to 58cm. Quick-release buckle fastening. Suitable for 5 years and over.