I think it is the Blue shirt that is a thermal shirt with the waffle pattern. Looks like the sleeves were cut off on that shirt too. The white shirt looks like a tight fitting smooth longlseeve shirt that was cut off at the elbow and in that image it looks like the ends are rolled up under itself.
I agree that you should be able to find a set of regular shirts to replicate the look fairly accurately. As IronManiac pointed out, there are no unique markings or designs to the shirts and with so many brands and cuts or this type of shirt it would be fairly difficult to find out what kind it is. You would need someone that worked on the film and could look at the tag if it is still there.