back support belt,waist belt,back support back support belt,waist belt,back supportsmooth glide adjustable clips.3.2cm extra wide support elastic ... suspenders.the material is polyoxymethylene.the large plastic stay center back material is PP.size:X Small (28" - 32") Small (32 ... (40" - 44") X Large (44" - 48") XX Large (48" - 54") back support belt,waist belt,back support