Glows brighter and longer with no batteries required!. Play all day – fly all night!. Glows for more than 30 minutes, simply expose the disc to direct sunlight for 60 seconds. The fun won’t stop even after sunset!. Age 5+. Product size: 10” (25.40cm) (DIA) x 1.24” (3.14cm) (H). Product weight: 130g Frisbee® Dyn-O-Glo®.