ISC sizes do seem weird sometimes.When Saints used Puma (best shirt makers we've ever had) I was a 2XL,since we've had ISC I need at least a 4XL despite me being no different in size.

I own one item of ISC clothing and that's a black with thin red hoops Wire polo shirt. It's a size L. All my other polos are an L or XL depending on the fit. I don't see the issue.

My what athletic fans we have.

I actually have the opposite problem, my medium (not bragging) seems much bigger than my other stuff.

Well I am also a medium and have to keep a close eye on my weight otherwise I lose my modelling contract with TK Max