Material: It is fused of soft PU and the liner is rubber bladder. And all soccer balls on this link are Thermally-bonded soccer balls. Size Reference: Size 4 ballCircumference: About 63cm Weight: 350-400g Suitable for Child Size 5 ballCircumference: About 69cm Weight: 400-450g Suitable for Adult We Support: 1. We support Customize, contact us for details if you need. 2. If you are wholesale or drop shipping, contact us for better price Note: 1. Please note the ball size in color display. 2. Please allow 1-2CM differs due to manual measurement. 3. Real color may slightly different from pictures due to many factors such as computer screen's resolution, contrast etc. Thanks for your understanding. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Minnanxin