Ergonomically designed in the UAEOne-piece molded constructionFull commercial and home gym useFor use with all Olympic and standard barsPower Band Sizes:Layered resistance bands 1.5 sizes. All bands are the length of 41" (208cm), the thickness of o.45cm, and range in resistance from 15-140 lbs.Red 208*1.3*0.45cm (XS), 15-35LBSPurple, 208*2.22*0.45cm(S), 35-50lbsOrange, 208*2.86*0.45cm(M), 50-65lbsGreen, 208*4.45*0.45cm(L), 65-100lbsBlue, 208*6.4*0.45cm(XL), 100-140lbs
