Yes, the name is a mouthful, but the Exfil Woobie Poncho Liner from Uwharrie does a little more than your traditional poncho liner. It can be used as a blanket but it also features a head hole so it can be worn. Additionally, there’s a zipper along the edge, so you can fashion it into a sleeping bag.
Offered in Black, Coyote, and Ranger Green with a bright Orange interior for signaling.
Available from Uwharrie as well as Raptor Tactical. I’m also told that US Patriot should have them in their stores.