The Reflective Fire Sticker Set comes with 4 flame decals. Each decal is 4-3/4" long and 3/4" high. They are designed to fit perfectly on your bicycle frame, or on your vented bike helmet. They are shipped on a sheet that is 3-1/2" high and 5" wide You are not limited to using this hyper reflective Flames Sticker Set on just bicycles. They are good on any smooth surface! You can add safety to your bicycle helmet, skateboard helmet, roller skate helmet, work helmet, motorcycle, and car! This Fire Helmet Sticker Set is cut from Genuine 3M, Automotive Grade, Retro Reflective Safety Vinyl. This is the same reflective decal material used on police cars and fire trucks. They look like regular decals in the daylight, but at night they glow under flashlights and headlights.