Luminous Responsive Yoyo, glow-in-the-dark yoyo balls made of ABS material. Features a standard flanging bearing and designed for string tricks (1A, 3A, 5A styles). Durable construction with high performance. Charge the noctilucent effect by placing the yoyo under light or sunlight for a few minutes. Heavier design enhances playability without the need for weighting rings. Ideal toy for kids, friends, and families. Recommended for daily practice or competition use.If the string gets stuck: 1. Remove the string. 2. Check if the ball is loose; ensure both hemispheres are tightly secured. 3. Reattach properly. (This step is crucial.)Compatible for moves in styles: 1A, 3A, 5A Weight: 65g Diameter: 51.03mm Ball width: 41.01mm Shaft width: 4.38mm Bearing: 8-ball U-shaped shaft Screw: 16mm Color: Green Material: ABS Package Contents: 1 x Yoyo ball 1 x Pair of gloves 1 x Velvet bag 5 x Ropes (random colors, specific color requests cannot be accommodated) Note: Only the items listed above are included. Light exposure and display settings may cause slight variations in color between the image and the actual product. Measurement tolerance: +/- 1-3cm.