Don't let the sun go down on your play session! The Wham-O glow fastback is great for night play. Just use a flashlight or other comparable light source to charge the disc. Frisbee brand discs have been the choice for canine play for over 26 years. Designed to meet all the needs of serious dog disc teams, it's also perfect for the casual player. The fastback is easy to throw, catch and it consistently flies great for advanced throwers.