Pig pen question ?

What I'm saying is I made the pen out of 50 in tall by 16 ft long panels. There what I call cattle panels. But there the ones that are like 20$ at the feed store. And I couldn't afford them, even at 20$. The farm I sometimes do work for had a bunch laying around and I asked if I could trade labor for some. That's how I got them. I did buy a few, and a few t post's but I kept cost to a minimum. And I didn't buy more panels to cut long ways. I just used the extra that I had. It's easy work with bolt cutters. I made 3 approx 12 to 14 inch by 16 ft long pieces out of one panel. Then just wired it to the posts on top of what was already there. That gave me the height I am comfortable with. For the rest of the pen I jjust used wood. That was laying around. Even cut some small trees down for some. Also I don't understand the pen inside of the pen idea. Are yall talking about the same height? If they can jump out of one they could sure jump out of the other. I Ain't trying to be a smart ass. I'm just looking for some recommendations and some ideas of what has worked for yall. That's all. And Im a little confused on what yall are talking about. Around here hogs are hard to come by, we can't just keep them and sell/trade them around. The 2 I have I want to be sure they don't get loose. Thanks fellas