Fed's Blazer

Here's a link to the story on Federer's Nike-designed blazer, the one that he has been wearing to court at Wimbly this week.

http://sports.yahoo.com/ten/photo?slug=75c471eaf2194559bac60eb7af136442.britian_wimbledon_tennis_xwim103&prov=ap

Rather sharp. It looks as though Nike actually tailored it. I wonder what material it's made of? Cotton? Linen? Silk/wool?

Thanks to the Tennis Warehouse forum for the link.