Yes, it looks like a dumb question, but hear me out.

I’ve recently discovered that, for babies, it’s normal to sleep in sleeping bags. They can either look like this (not great, with the arms out) or… - prepare for what you’re about to see - like this.

Now - how awesome must that feel? Naturally, my fist instinct was to look up sleeping bags like that for grownups. Unfortunately, they apparently do not exist. I can only find the usual sleeping bags that are used for camping etc., which are all made of that horrible, plasticky, noisy material.

So my question is twofold: do “home sleeping bags” for adults exist? And, if not, WHY?