Every time I see a smoking jacket, I look at the tag to see what it is made of. 9 out of 10 I have seen was made of rayon, acetate and triacetate. Remember all of those children's Halloween costumes of the 60's and 70's... that when they get hot, they shrink to the child's skin and burn like napalm. I just wouldn't wear something like that to actually smoke in. Most seem designed to just look like a smoking jacket, like a cheap Halloween costume.