I don't have any wool, but I have heard that wool is the best for night. I made up my own night time diaper after going through months of a soaking wet bed. I made hemp fleece soakers with three layers of hemp fleece each. I use three of them plus a fleece topped hemp soaker that I already had with the shell of a Little Lambs front snap AIO. I have found that if I use a side snap he always leaks. Also if a use a diaper with a cotton print on the outside he leaks. I don't have any FB, but I have heard they are very bulky. Sometimes if you put too much into a bulky diaper it makes the legs not be tight enough and they leak right out the sides. Good Luck, it is something I struggled with for about 6 months before finding the right solution.