... size 5 PVC machine stitched volleyball rubber bladder, 18 panels, 260-280 grams Product Feature:1. Description:PVC machine stitched volleyballsize: ... 5#,4#,1#outer material: leather--matt soft touching volleyball material inner bladder---- ... , bounce between 1.2m and 1.6m, 18 machine stitched panels.durability: water absorption less than 10%.deviation ...