★empty bag can fill in beans;coarse sand;plastic particle;rice etc. ★80 percent of filling volume is enough for practice ★bag size 40cm(15.7inch)*40cm(15.7inch);about 170g;bearing load about 10KG ★one pcs per price selling with canvas cloth;Copper buckle;zipper material ★You can use sticky hook(not included )installing on the smooth wall