KONG Twistz High-Viz Ring’s vibrant, highly visible colors make this the perfect toy for all outdoor environments, weather, and terrain. This twisted ring is easy-to-grip, with bright colors that stand out in tall grass, at the pool, in snow, on dreary days—even at night with glow-in-the-dark technology. Durable material gives the Twistz High-Viz Ring a dynamic bounce and long-distance rolling action. Charge the Ring under a lamp or in the sunlight for glowing fun.