Black Diamond's Twilight Bivy is great light-weight shelter for a favourable weather forecast or as an emergency option. The useful feature set differentiates the Twilight from more minimalist bivys.
Black Diamond says:
The minimalist, four-season Black Diamond Twilight Bivy is built from water-resistant and breathable NanoShield fabric that keeps weight to an absolute minimum and packs down incredibly small, making it ideal for an emergency shelter or as a sleeping bag cover. Built with a zippered entry across the shoulders, it’s easy to get into and use while sitting up.
Black Diamond's Twilight Bivy is a light-weight shelter which has a few useful features setting it apart from more minimalist emergency bivy bags.
The Twilight bivy has a zipped mesh inner as well as zipped outer so for those pleasant nights you can just have the mesh shut to keep insects at bay. The bivy has tie bag loops to keep the opening away tidily for star gazing or sitting up and cooking. These loops can occasionally snag on the zips when trying to open/close the bivy but this would problem happen less with practice.
The pack size is impressively small, less than a 1 litre water bottle.
The bag comes with Gear Aid seam sealant if you want to increase the bags water resistance.
- Reviewed by Ultralight Outdoor Gear