If you have to keep reminding your son to wear a helmet every time he's going for a bike ride, consider the Raskullz Hawk Helmet. He'll probably want to wear it even when he's not riding a bike. Boys love this Mohawk design. It makes them feel cool. One six-year old reports this as the reason he can now ride without training wheels. The Hawk Helmet is a full 3D mohawk helmet with shock absorbing EPS inner shell, adjustable straps, and aerodynamic cooling vent. This helmet complies with the Consumer Product Safety Commission standards for bicycle helmets.