COSTWAY Adjustable AB Back Bench Hyperextension Exercise Abdominal Roman Chair Material: Steel; Unit Weight: 20lbs;Weight Capacity: 220 Lbs;Pad Thickness: 1.6 Outer Rectangular Tube Size: 50 X 50 X 1.5mm; Pad Thickness: 1.6 Inner Rectangular Tube Size: 38x38x1.5mm; Size Of The Pad: 15.7" X 11"(L X W) Adjustable Height: 28.7''  23.5'' (5 Levels Adjustable);Whole Size: 23.5" X 18.9" X 39" (L X W X Max H) Package Include: 1 X Hyperextension Bench (Need Assembled), 1 X Instruction