Setup an incline bench at a slight angle of about 20-30 degrees and lay across the bench face down with your head hanging over the top and feet straight out behind you.
Extend a pair of dumbbells out in front of you toward the floor with your palms facing in and angled slightly outward.
Raise the weights up in a circular path until the dumbbells are in line with the sides of your head. Pause momentarily in the fully contracted position and focus on squeezing your rear delts and upper back before returning to the starting position.