I like his other outfit better and i whish he still had his jumper.

I think it is all black and just his jacket is a leather like material. But I like his Jacket with the fur collar better, I think he looked cuter in that then in his Shippuden outfit. ^^

I agree. His previouse outfit is much better. The fur lining expressed more of his wild personality. Oh yeah, his current jacket looks leather to me.

to answer your question, I dont even think its leather! that'd be too warm and hard to move in! Its probably just a longer sleeved zippered 3/4 up shirt with a wild collar, thin armor underneath.

and to join the argument, I like both his outfits! His previous jacket is really cute with the fur hood and giant pockets and front(akamaru rides shotgun) but his Shippuden outfit shows how slim he is, he's good looking xD
I noticed his hair got shorter too, I actually kinda liked his messy hair better!
and btw, according to my brother he looked really fat in his "Eskimo coat" ...... but my brother is weird!

I like his black jacket he is cool