The Harbinger® Push Up Pro reduces strain on joints, and engage more muscles for a truly perfect pushup. The original, patented design features a ball bearing system that provides smooth, full rotation for natural alignment of the arms and wrists. Comfortable rubber grips and non-slip base ensure stability during high rep, multiple set upper body workouts. Invented by a US Navy SEAL to optimize the basic push up, the Harbinger Pushup Pro reduces pressure on the hands and wrists, and effectively activates muscles through its ergonomic design, increasing strength and definition in arms, shoulders, chest, back, and core. Appropriate for all fitness levels, from beginner to expert.