LEVEL 2 ADVANCED PROTECTION BEST FOR Helping to relieve painful tennis/golf elbow symptoms through targeted pressure Size Forearm circumference: (just below elbow) S: 8-9.5 nM: 9.5-11 nL: 11-12 nFOREARM With your arm slightly flexed, measure the fullest part of your forearm, typically midway between your wrist and elbow