I have 2 AK's. One in black and the other in putty. I can't say enough about them. They're my most prized garments in my wardrobe (admittedly, I don't have a "tank" yet). The putty is of a slightly heavier material than the black - almost like those old green canvas schoolbags. They do take a little bit to break in but they are very comfortable right out of the box.