Adjustable Sit-up Board B39 Specifications: Size: 65"(W) x 25"(L) x 45"(H) Shipping Weight: 60 lbs. Target Muscle Groups - Abdominals Features: Adjustable Knee Support Pad Adjustable Seat Angle Adjustable Seat Height Position Caster Wheels Moulded Feet for Floor Protection Protective Wear Guards on Upholstery High Use Areas Solid One-piece Frame Construction