Shape. Tone. Sculpt. Strengthen. Make any time crunch time with the Best Fitness Semi-Recumbent Ab Crunch Bench. This ergonomically designed machine is built to help you tighten up your midsection, strengthen your back and improve your core stability. Its dual functionality lets you target your lower abs with knee raises and your upper abs with abdominal crunches. No other machine can provide such a total ab workout from a comfortable seated position. For the more advanced user add weights to either the upper or lower weight pegs for unlimited resistance. Dimensions: 46"H x 64"L x 22"W