This might help a little bit guys... Most screen printers use plastisol ink now... The use of plastisol inks would explain the plastic hard feel of the shirts, it trapping the heat in and it also smells like burnt plastic when the ink is cured. Hope this helps....

PLASTISOL:
Pros – best color accuracy (based off pantone color match), most resistant to fading, able to layer colors without any blending, cheapest, easiest to find a printer for
Cons – creates the most ‘hand’ (feeling of ink on the shirt), can chip or peel over time, when printing over seams can bunch up in tight areas and crumble creating ugly areas in the end product, less ideal for creating faded or ‘vintage’ looking designs, not very ‘green’ (how important this is to your company could weigh heavily in your choice)
WATERBASED:
Pros – creates little to no ‘hand’, environmentally friendly, can print over seams better since the ink seeps into the shirt itself, great for creating distressed or worn out looking designs, able to layer plastisol over it without any problems (waterbased over plastisol however won’t dry on the shirt)
Cons – generally more expensive, doesn’t work well (if at all) on dark garments, layering colors can cause problems (as you can see thru the layers creating some color mixing), can be harder to do a pantone match (depends on printer), fades after first wash resulting in what could be duller colors than expected

check out Chad Boespflug tee's . I think there what your looking for. Large picture of both cars,but there on the back, three dif options and they all breath.