I have some official Giant Team Kit for sale - all made by Nalini.
They are all size Medium but come up a bit small. They would suit 30-32 waist and 36-38 chest I would say (unless you like your kit to have the painted on look).
Short sleeve jersey - Giant branded - medium
Only used once I can remember
Giant bib-shorts with Nalini pad - medium
Used a couple of times
Giant Gilet/Vest - softshell windstopper type material with rear reflective trim - medium
Used a few times but in good condition.
£30 for everything