I honestly believe this is a must have for every child wanting to learn how to ride a bike. We bought our daughter a Strider Running Bike for her birthday when she turned three. It is an adorable pink bike. Well, my girly girl, who is not a big fan of biking quite yet, was more interested in her princess stuff and it wasn't long before her big brother had swiped her new bike out from under her.
His bike was a John Deere bike with training wheels and it had been a struggle to get him to ride it. He just did not feel comfortable with the tippy feel of it and constantly turned back to the little kiddie tricycle we have. Well, it was not long before he was zipping around on this pink Strider Running bike. He would build ramps and little bike trails all over our backyard. The thing weighs barely anything so it allowed him total control. He would even ride it over the compost heap. So, not too long ago, my husband went ahead and dug out the John Deere bike and took the training wheels off, put my son on it, and he was riding a two wheel bike in two days!! I don't mean just going straight, he could make a U-turn in the street, I was floored!
My best friend in town bought one for her kids (she has 4 kids aged 5 and under) and within a few weeks the two older ones were riding their big kid bikes and the 2 year old was riding the strider.
And.... even cooler, the customer service rocks!!! My son somehow broke the seat on ours. I emailed the company and they were sending out the new seat within that day!!! So cool!