For sale is a BRAND NEW pair of Franklin Superlight Shin Guards.  These can be used for a multitude of sports including Soccer and/or Baseball.  The packaging says these should fit a person up to 5'11", but I think realistically it depends on the fitting to the persons leg.  I have given the best dimensions I could for the exact sizing, so you be the judge.  I would think that if the player has about outgrown the MEDIUM, that these would be the next size to get.  These can be yours for only $14.00 plus $3.00 shipping.