Luminous Responsive Yoyo, glow-in-the-dark yoyo balls with standard flanging bearing Made from ABS material, suitable for string tricks (1A, 3A, 5A), durable and high performance Charge the noctilucent yoyo by placing it under light or in sunlight for a few minutes to activate the glow effect Heavier design enhances playability without the need for weighting rings. A great toy for kids, friends, and families; recommended for daily practice or competitions If the string gets stuck: 1. Remove the string 2. Check if the ball is loose and ensure both hemispheres are securely tightened 3. Reattach properly (most important step) Applicable trick 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: Blue 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: The package includes only the items listed above. Other accessories shown are not included. Note: Lighting conditions and monitor settings may cause slight variations in color between the product image and the actual item. Measurement tolerance is +/- 1-3cm.