Centered on a telescoping 2x 2 steel beam, our Pro-Style Adjustable Ab Board adjusts to 12 positions for increased or decreased difficulty when doing sit-ups or crunches. Featuring an extra-wide, extra-thick double-stitched DuraFirm pad and oversized 8 foam rollers. Dimensions: 54L x 24W x 52H Warranty: In-Home LIFETIME Warranty