Light Up Super Ball A 50mm ball made with translucent high bouncing plastic material and a clear light up centre core. The centre core has two red lights that blink for 10-15 seconds when the balls are bounced. The T-710 is the first version of the light balls with translucent coloured exterior layer and the logo is printed on the inner centre core so the imprint will never come off! It maybe difficult to read the logos through this coloured exterior layer so small type, detailed logos or light colour imprints are not recommended. Colour/s : Red, Blue, Green, Clear, Purple or Yellow Size: 50mm dia.