Foxfire Illuminating Helmet Bars are perfect for modern helmets, flashlights, radio straps and other items that get used in the dark. Sold in sets of six. Each bar measures 1 inch x 3 inches. Foxfire illuminating Helmet Bars combine advanced photoluminescent technology with reflective micro prismatic technology. The bars are constructed with high temperature resistant fire retardant cloth and an industrial grade adhesive to ensure strong surface bonding.