The "J" in Nike's J Guard doesn't stand for Junior - it stands for Japan. This incredibly low profile guard, designed in Japan, is for adult players who had rather not wear a guard at all. This lightweight guard offers protection without getting in the way or weighing you down.
A super-lightweight shinguard option
Nike's J Guard has an anatomical shape for an comfortable fit
Low profile PE shell for reliable protection
Dual density EVA foam padding for cushioning.
Sizing help:
Height 4'7" to 4'11" = XS
Height 4'11" to 5'3" = S
Height 5'3" to 5'7" = M
Height 5'7" to 5'11" = L
Height 5'11" to 6'7" = XL