Compact, ultralight, stormproof bivy sacks, the Hooped Bivy Sack by Black Diamond uses a sewn-in flexible wire, a dual-slider zipper that opens in the middle and a no-see-um mesh covered opening gives you some adjustable breathing space. It's built from waterproof, windproof and breathable ToddTex with a polyurethane-laminated floor. For security, the double storm flap and rain gutter use a seamless construction, and all other seams are factory taped. The Big Wall Hooped Bivy has all the features of the Hooped Bivy but incorporates an RF-welded tie-in point for total protection while you're clipped in.

DECENT FEATURES of the Black Diamond Hooped Bivy Sack

• Sewn-in flexible wire creates air space
• Dual-sided zipper and mesh covered opening
• ToddTex single-wall fabric
• Taped seams

The SPECS

• Season: 4
• Average Packaged Weight: 1 lb 12 oz / 805 g
• Dimension: 90 x 35" / 229 x 89 cm
• Area: 22 square feet / 2 square meter
• Weight: 1 lb 10 oz / 695 g
• Packed Size: 6 x 19" / 15 x 48 cm