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 Twilight Bivy Features: 

• Frameless construction to minimize weight
• Proprietary NanoShield single-wall fabric
• Year-round performance

NANOSHIELD™ FABRIC: Superlight Series tent canopies and bivys are constructed with NanoShield—Black Diamond’s proprietary breathable single-layer fabric. NanoShield is extremely water-resistant boasting the highest water column rating of any breathable, single-layer fabric. This is thanks to our exclusive Silicone Nanocell coating, which allows the fabric to remain light, soft and packable.

Specs: 

• Season:  4
• Average Packed Weight:  302 g
• Minimum Weight:  290 g
• Dimensions:  208 x 84 cm
• Area:  1.75 m2
• Packed Size:  8 x 13 cm