A lacrosse stick was originally made of wood, with a small pocket in which to hold the ball. Sometimes Native Americans attached feathers of hawks to their sticks for precise vision, or fur from a wolf for speed and agility. The pocket of the stick was often strung with leather runners; and the non-wooden wall was laced with cow or deer intestine that hardened to create a rigid shape. Robert Pool introduced the double walled lacrosse stick on July 20, 1937, and the game was forever changed. The sturdier stick made handling the ball much easier, and these sticks would eventually influence the design of today’s plastic sticks. In August of 1970 STX patented the first plastic molded head which was lighter and easier to maneuver than the thick wooden ones. This also enabled players to restring their heads easier, and gave them a better ability to form the pocket to their liking. in the 1980's mesh laces were introduced, instead of leather stringing. Mesh was not only lighter, it performed better