Calfskin leather but it's buttery soft and supple. It is quite broken in as well, so it does not have that stiff felling when you move your arms. The weight is ideal for spring/fall (+ winter if you live in warm climate). The distressing/wrinkling seen at the collar and on the pocket flaps are part of the design. The wrinkling on the rest of the jacket is because I voluntarily toss my jacket in a corner of my drawer to give it that look. It is not permanent at all, and depending on which look you prefer, it can easily go back to its original look (I've included pics showing both looks). There are 4 outside pockets: 2 lateral ones and 2 other with flaps (look at the closeup pic). Size: I don't remember if the tagged size was 44 or 46 (no tags on the jacket), but it fits exactly between the 2 sizes (which is my ideal size). So basically a size 45 - for a bigger XS or a smaller S. Measurements are: Pit to pit 18.5 inches Shoulder to shoulder 16.5 inches Shoulder to cuff sleeve length 25.6 inches total length on back, not including collar 24.5 inches Price: I paid 825$ shipped in October 2010 to buy it used (no idea how much it retailed for). Considering the fact that it's missing the interior* of the right flap pocket, I'm ready to let it go for 550$ w/ shipping included (which is gonna be at least 30$ since I'm shipping from Montreal). * You can have any tailor put in a new pocket to replace the old one and it shouldn't cost much, it's a pretty basic job. Either way, it doesn't affect the look of the jacket, neither from the outside nor from the inside (there's a lining on the inside). So you could very well wear the jacket as is without ever noticing, unless you unbutton the right pocket and put your hand in there. If it's a deal-breaker for any serious buyer, I can go ahead and have my tailor sew in the new pocket bag before having the jacket shipped. The price would then be 25$ more. (the 25$ difference was to save me from having to do that).