["GREAT AIR RETENTION: Butyl rubber bladder for best air retention to keep the balls shape and stay inflated longer. You only need to inflate few air into ball every month. Excellent combination of bounce and air retention" RUGGED: Special Thermal-Bonding technology make the size 5 soccer balls more durability and no thread broken reduce the water seepage inside the body，provide excellent strength and stable moving trail PU LEATHER: Epidermis PU full grain leather avoids water absorption effectively and overweight，Not easy splitting and falling apart and not easy to get dirty. POE foam in the second layer offer a perfect balance of contact quality and bounce NOTE: Soccer ball size 5 inflated but not full to keep the shape and avoid wrinkles during the shipment. So inflation is required before you play it.Package comes with an inflation pump MULTIPURPOSE: The size 5 soccer ball can be used for training and play. Suitable for all types of people grass beach concrete can be used]