Baines was superb for England this past week.
"I look at the outstanding contribution he had over the two games," said Martinez.
"Against Poland he was really influential, I thought he enjoyed his football and was himself and showed where he is in his career really.
"Obviously from our point of view Leighton's performance is something we see week in, week out.
"It is great when you see a player take that into his international duty, it shows you the maturity and how ready he is to perform at that level.
"There are not many left-backs in world football that can produce what Leighton Baines produced and that is very pleasing.
"You don't see a lot of players who can give you that quality in the final third and, in the same manner, assurance and decision-making in his defensive duties.
"It is very difficult to find another left-back around the world (like that).
"But it was just a natural performance from Leighton, if you are following him and you are an Evertonian you know what he is capable of doing."
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