I have a Ptarmigan Bivy made by Titanium Goat that I used 2 nights. The bivy is basically new. There is nothing wrong with it, I just learned that I'm not a fan of bivies.
It weighs 7 ounces with stuff sack, and is a regular length . It has a sil-nylon waterproof floor, a sil-nylon breathable top, and a full no-seeum net hood. I paid $110 and will sell it for $70.