Please do NOT buy a STRIDER 16 SPORT YOUTH BALANCE BIKE. The design is incredibly poor. Two hubs at the bottom of the frame, which allow footrests to be added, actually stick out on either side of the frame. This means that children can very easily hit their legs against the frame, causing pain and bruising. I go into schools to teach children to ride bikes and balance bikes, and a lot of the children complain about this problem with the Strider bikes. Today, I had a child in floods of tears after hitting her leg, which has prompted me to write this review. Strider really should remove this design from sale and drastically improve it. It is currently not fit for purpose.