Extend fetch time to early mornings and late nights with Chuckit! Tumble Bumper Max Glow fetch toys. Charge under bright light 5 to 10 minutes for 20 to 30 minutes of high-visibility, lighted play. MAX GLOW products are made with a safe, high quality photo luminescent material that is both chemically and biologically inert. Recharge in seconds with a bright flashlight. Fast charging MAX GLOW rubber, EVA foam and 2100 denier polyester construction. Random bounce tumbling action will provide hours of fun for you and your pet.