Have had my racket restrung with shock shield 3 times now. Had a bad case of tennis elbow but its gone now without reducing play frequency. Shock shield string and some excercises cured my elbow. String plays well, good spin, good baseline power and net volley at 59 #. Started at 56 # but felt the string relaxed some. 59# proved better without any eblow complaints. BTW the light blue color has visually enhancing the racket..