What is the best Lt. Winter bivy?

[TeleHo]

Looking for a winter bivy sack that is Lt. yet durable. Checked out the BD Winter Bivy, is this is as good as it gets?

[Jonathan S.]

Some very interesting designs here:
http://www.mountainlaureldesigns.com...17badaafd511c5
For the money though, and if you like the Epic material, the BD Winter Bivy is a great choice.

[Hugh Conway]

The winter bivy is cheap and works. The zipper is a bit flimsy, I warranteed a prior one because it broke.

[Jonathan S.]

I recall that Lou Dawson on his "trooper traverse" trip just removed the zipper entirely beforehand.