The Outdoor 1000 SoftSet Volleyball Competition Game Ball is one of the best selling balls in the Mikasa Sports USA indoor ball line. It has "immediate feel appeal", thanks to a durable, ultra- soft composite cover. Soft Bilt fabric center and Accu-Balance technology insures ultimate softness. Butyl bladder guarantees true shape and air retention. Specs: Official size and weight, Accu-Balance true shape retention, fabric center, Composite cover.