Luminous Responsive Yoyo, glow-in-the-dark yoyo balls made from ABS material with a standard flanging bearing. Designed for string tricks (1A, 3A, 5A styles), this durable and high-performance yoyo features a long-lasting noctilucent glow effect. Simply expose the yoyo to light or sunlight for a few minutes to charge the glow. Heavier than previous models, providing enhanced playability without the need for weighting rings. Ideal for kids, friends, and families; recommended for daily practice or competitive use.If the string gets stuck:1. Remove the string first.2. Check if the ball is loose and ensure both hemispheres are tightly secured.3. Reattach the string properly (most important step).Compatible for moves: 1A, 3A, 5AWeight: 65gDiameter: 51.03mmBall width: 41.01mmShaft width: 4.38mmBearing: 8-ball U-shaped shaftScrew: M4*16mmColor: Blue / GreenMaterial: ABSPackage Includes:1 x Yoyo ball1 x Pair of gloves1 x Velvet bag5 x Ropes (random colors, specific color requests cannot be accommodated)Note: The package includes only the items listed above. Additional products are not included. Due to lighting and display differences, the actual color may vary slightly from the image. Measurement may vary by +/- 1-3cm.