Product Description: Material: PU Color: as shown Size: 25cm (No. 7) Features: This nightball will glow in the dark with a clear green light! In order to get the glowing basketball effect you need to put the ball anywhere outside in the daylight (the longer the better) . The ball stays lighted up in the dark for up to 4 hours depending on the light intensity in the day time. This glow in the dark ball is made with the special material which naturally charges from the sunlight in the daytime and does not require batteries or camera flash to get the glow ball feature like others. Glow in dark basketball is made of a high quality composite hygroscopic leather which will last long while the inner bladder will maintain a good bounce shape. This nightball basketball matches the official Size 7! (29.5 in),it will make an excellent gift for any basketball lover! Packing list: 1x Luminous Basketball Notes: Due to manual measurement, there may be slight dimensional deviations. Please allow chromatic aberration due to the different shooting light, angle, and monitor. 【Better glowing effect without battery】In the dark basketball, this glowing basketball uses a new fluorescent material to make the basketball more durable and achieve better glowing effect. 【SLIP GRIP】New design to make sure our ball challenges your handling! Still bounces perfectly, but the smooth surface will challenge you to increase your handling skills. 【INDOOR/NIGHT TRAINING】Increase skills by making handling harder. Made for indoor use, this ball was designed to perform perfectly on the court.