Opteka SV-AX5 Stabilizer Operator Vest with Swing Arm for the Opteka SteadyVid EX, SteadyVid PRO & Merlin Stabilization Systems Centers and evenly distributes weight of your device Decreases fatigue and increases weight capacity of the stabilizer system Dual-hinge swing arm Fully adjustable vest for most body types Compatible with the Opteka SteadyVid Pro, SteadyVid EX, Merlin and similar stabilization systems