I have a previous generation Big Agnes 3-wire Bivy. It is in good shape and clean. I am posting a link to the current generation for the specs. Minimum trail weight with 4 stakes is 1lb 13oz. It also includes a tent pole repair sleeve and all original stuff sacks. This is small enough for to throw in the backpack for a "just-in-case" when chasing elk or mule deer. I no longer go solo camping, so need to get rid of this in favor of something bigger. $200 shipped PP FF or MO.
https://www.bigagnes.com/Three-Wire-Bivy I can't seem to use Photobucket anymore so PM for pics.