As far as T-shirts go, this North Face Flight Series one is my favourite.
I bought a version of this T-shirt about five years ago in black (also has a 1/4 length zip) and that is still going strong today.
I like the fitted shape, so it feels great when you slip it on, plus the fabric is stretchy and smooth on your skin. The seams are stitch-free and the knitted type fabric really does wick the sweat away from you.
The version you see here is in Pompeian Red, but they also do it in Bomber Blue. Both are usually £60, but at the moment you can get them in the sale
for £36 and £30 respectively.
Buy the Better Than Naked Shorts 5
in mid grey/pompeian red from here
to go with it.