I have a Yama Mountain Gear Bug Bivy for sale.   It is the Regular/Bigger in Silpoly weighing in at 7.4 ounces.   It is the Y-zip version.  I used it for one night on a piece of Tyvek.  In brand new condition.   Simply have too many shelters so thinning out the closet.

Will take $110 with free shipping via Paypal FF.   Comes in Yama stuff sack.  https://yamamountaingear.com/collections/net-tents/products/bug-bivy

 

Feel free to shoot me a message for pics.