Many lifters have weak or underdeveloped backs because their biceps take over during back exercises. With the Thib lat pulldown, the biceps are removed from the movement, forcing the back to do all the work.
Set up a pair of ab straps on a high-cable pulley machine.
Pull with the elbows, in a V-position, keeping the elbows close to the body then spreading them.
Keep your torso straight with an arch in the lower back. Keep the shoulders back and pause for a second in the contracted position.