Features: Due to the special material, this light up football can glow green light in the dark without a battery. It is safe and convenient, bringing you and your family fun sports. In order to get a better luminous effect, please put the football in the sun or other regular lights for a long time, the longer it absorb the light, the brighter light it will glow. Specifications: Material: special leather Color: glow green light Size: approx. 26 x 13 cm/ 10.24 x 5.12 inches Package includes: 1 x Glow in the dark football Notes: Manual measurement, please allow slight errors on size. The color may exist slight difference due to different screen displays.