If you don't ask questions, you won't learn!!!! First of all, I've never made a quilt with wool....BUT, my first MIL did! She used regular batting (back then you didn't have much choice) and she used flannel for the backing. Remember, wool can get very heavy --- so maybe a lapsize quilt would be best, however, for cuddling on the couch, I think queen size would work best. No matter what size, they'll love it!