The helmet thing is frustrating. My 5 yr old loves her helmet and doesn't even need a reminder. I let my 3 yr old try on my helmet and on the smallest setting it fit (I have a small head) it looked a little silly but was tight. I may let her have my helmet if she'll wear it since it's her favorite color and I can get a new one. I won't get on my bike without my helmet. I'm considering making the tricycle disappear.