Power Systems Pro Abominator, Cushioned Arm Cradles Used to Support the Body During Hanging Knee and Leg Raises, 2-Pack, Black (67112) 8 inch padded, extra-wide, arm straps/slings can support up to 300 pounds Includes aluminum carabineers for attaching to an up to 1-inch diameter pull up bar Go beyond the basic floor sit ups Develop core muscles with hanging knee and leg raises Exercise training aid for speed, agility, strength, power, running, football, volleyball, basketball, baseball, soccer and all other athletic, fitness, weight, or cross training