Saddle is okay, don't know who makes it. It shows Worksman on the back, but I don't see any other info or place of origin or anything, and I'm not familiar enough with stuff like this to deduce it from the construction. On my previous mountain bike, I had bought a $20 big cushy saddle from Walmart or Academy, and this saddle is not a lot different from that in comfort. It is a little slicker, so you don't want it pointing downhill. They also have a larger 13" saddle, and I don't know what it is like.
On the normal bikes that I'm used to (meaning cheap bikes), the seat post is large and then necked down where it goes into the seat. This seat post is the same (small) size all the way, but is heavier-walled tube.