This is the 6' diam. soccer ball that can be filled with air or helium (available at party stores) and has a puncture-resistant bladder and 420-denier nylon cover, the same used for backpacks, for durability that holds its seal for up to two months before requiring reinflation. The cover is washable and closed by a low-profile #5 industrial zipper, unlike rope or string used for similar products. Uses the same valve found in inflatable boats and will fit standard air pumps (sold below). When the non-toxic vinyl bladder is inflated with helium, the ball gains 8 lbs. of lift and weighs only 2 lbs. When inflated with air, the ball weights just over 10 lbs. The ball can withstand 250 lbs. of non-concentrated pressure, resulting in durable longevity when used in exhuberant group play. Comes with vinyl patch kit and instructions for playing "giant soccer." Ages 10 and up. 6' diam. (10 1/2 lbs.)