Checker/White/Blue Reflective Belt, High Visibility is a 2-inch wide extra Heavy Duty webbing sewn onto the back of a Standard Duty reflective belt. Fits 30 to 55-inches. Fastener is a Side Release Buckle. ANSI/ISEA 107-1999 Microprism Retroreflective Material is welded onto a vinyl backing that reflects well in the rain and is easy to clean, because all seams are welded, not sewn, to keep water and dirt out of the microprisms, which would lower the reflection. Daytime Colors Are Reflected At Nighttime. Metalized Microprism Reflectors Make Checker Colors the Brightest.