Whatever you do, don't put the wool batting in a hot dryer to get the wrinkles out. I did that once and it was a disaster. My dryer runs hot. When I took it out of the dryer, some areas were hard and yellowed.
Most wool batting today is superwashed and either resin bonded or thermally bonded.
Per the Quilter's Dream website,
-Thermal Bonding is a process that interlocks the fibers through the use of heat energy. For Dream Wool and Dream Puff, we use a special fine denier low melt polyester for the thermal bonding. Thermal bonding is an environmentally (absent of chemical resin binders) favorable technology.
The heat in the thermal bonding process softens the surface of the fiber. At the melting point, fibers in contact with each other will form strong bonds, which secure the wool fibers, preventing shrinking, bunching, and shifting. When this is cooled the bonding points solidify and ensure the strength and performance of the batting. Should not be ironed or used in a hot dryer.-
In my case, I think it was the bonding that melted against the hot dryer walls after the dryer quit tumbling.
I love using wool batting for lap quilts and bed quilts. It is much more lightweight than cotton. It is warm in winter and cooler in summer, without getting hot and damp.
It breathes. It is flexible and drapes well. Some people use a layer of wool on top of 80/20 or polyester to make their quilting show up more, but I am not that good yet. I just use it for comfortable quilts. I made this flannel quilt of scraps leftover from another quilt project. It has wool batting. It is definitely a utility quilt. It gets constant use and has been machine washed several times.