... panels 260-280 grams Product Feature:1. Description: 5# pu machine stitched volleyballsize: 5#,4#,1#outer material: leather--matt soft touching ... centigrade, bounce between 1.2m and 1.6m, 18 machine stitched panels.durability: water absorption less than 10%.deviation in ... sphericity: 1.5% after 2000 kicks.usage of the ball: training,playing, ...