Helmet mounted lights should be bright and lightweight. Choose from flashlights that can fit into a helmet clip (the clip attaches to the side fo the helmet), a headlamp with a rubber strap or a headlamp with a clip mount that sticks to the front of the hard hat. Top picks are the Underwater Kinetics 4AA eLED RFL flashlight, Nightstick Intrinsically Dual Light Cap Lamp and Princeton Tec Vizz Industrial headlamp that includes a rubber strap for use on a helmet or hard hat. Headlamps are a great choice for use on a helmet or hard hat, and many include a rubber strap for that purpose. If a rubber strap is not available, there are clips that can be used to attach the headlamp head strap to a hard hat.