Chuckit! Max Glow Ball. Photoluminescent rubber that charges under any bright light — about five minutes of sun or a few seconds under a flashlight gives 20 to 30 minutes of glow, with no batteries or cords. Built for fetch after dark, for early mornings, and for anyone who gets home after sunset. The textured surface gives a dog a firm grip and shrugs off dirt and slobber, and it works with Chuckit! launchers in the matching size. Small suits dogs up to about 20 lbs; X-Large is sized for the big breeds.