oh nice, u get it from online or in a HK?
And you mention it is tighter, is it alot? because I am planning to get this too..
In HK shop, just a little bit tight....
may be I get a little bit fat recently.....
I think you do not have to try another size, just buy it with the size as usual....
I remember you are one of the few member here wearing size S, right??
I usually wear S in adidas, nike and umbro, and M in puma, kappa.....