WRSI makes a small shell version of their basic helmet. Both of my kids use these. I started with ProTec Ace helmets that I padded out to make them fit better, but even with the customizing, those are awful helmets - cheaply built, hard to keep on the head even with straps adjusted "properly." Threw them away rather than sell or give them to someone else - IMO they are that bad.
The WRSI, on the other hand, are very good helmets. Should have just bought them to start with. My younger started wearing his at 6 or 7 (don't remember now). With full factory padding, it was a tiny bit loose, but not enough to pose a risk. At 9, it fits perfectly.
If you can't find something that fits well enough, a bike helmet will be better than no helmet. Just remember that bike helmets are single impact. One whack, and you should replace it. |