Black Diamond Big Wall Hooped Bivy. This big wall specific bivy design differs from the standard Hooped Bivy by incorporating a strong waterproof tie in point, so you can sleep securely all night long. Waterproofbreathable ToddTex fabric separates the elements from your sleeping bag, and the sewn in wire hoop creates air space over your face so you don't have fabric in your nose all night. A mesh opening beneath the hoop allows air to flow.
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