I'm really not an over protective parent. I would probably let her ride without a helmet at all. But after a spill off her bike last week (which didn't harm her AT ALL. She picked her face out of the leaves in the ditch and hollered "I'm OK!") the May Queen was nervous about getting back on two wheels. She wanted protection! So we bought her a helmet and she insisted on gearing up in these knee and elbow pads AND fingerless gloves. With fairies to guard her head and unicorns to pad all her joints she and her daddy went for a bike ride around the neighborhood.
Of course, she didn't fall at all.