The Trap Builder™ allows the archer to isolate the lower trapezius muscle (below shoulder blades) and draw using the back instead of arm and shoulder muscles. The light stretch band facilitates proper release and follow through. Recurve archers adjust it to full draw weight and compound archers to the let off weight. Easy to adjust, light weight and compact. Excellent tournament warm up tool and so beneficial it should be part of every coach and archer’s tool kit.