Steve I messed up once that way. I bought a surplus wool blanket years ago for hiking. They were cheap then and you could always get more. I gave it to my first dog for bedding.
OTOH my hiking days are pretty much done. My left foot has a hole in it about 2" diameter and an inch deep caused by my melanoma and tumor die-off. It's going to be a long time healing and will never be able to take the strain of extended hikes again.
Rodney