Black Diamond Twilight
The water-resistant/breathable Twilight replaces Black Diamond's Winter Bivy as the lightest bivy sack in the Black Diamond collection. The major difference, aside from a color change, is a switch to 'NanoShield' fabric (from Epic). We also get the addition of a mesh over-the-face panel for bug protection. What is NanoShield? I believe it is basically a re-branded Epic, with the primary difference .
— September 10, 2012
Andy Lewicky is the author and creator of SierraDescents
TrevorB September 12, 2012 at 11:37 pm
I got one of these:)
Let's go camp under the stars!