These are the waders I've been using since February. They are breathable and very tough. The bottoms are five layer and the top is four. The fit is very comfortable and they can go through the thickest brush with no problem. However I've now gone through three pairs and the crotch seam devolps a leak after a few months on all of them. LL Bean's customer service is top notch and each time they sent me a new pair of waders in a few days at no cost to me and the last pair I sent back I asked for a refund and they refunded my money completly with no problem. So I recommend LL Bean since if your not happy with their product they'll refund you completly but stay away from these waders since they all have the same problem.
On a side note I got a pair of their flyweight waders as a back up and have had a lot less problems. They are not real tough since they are thin but what do you want for $59. I've used them a bunch of times and with the exception of some small holes from thorns they are fine, I use a little Aquaseal and they are good to go again. I wouldn't recommend them as a primary pair of waders but they are good back ups.