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Tag Archives: pertex

Bivy Sack Buyer’s Guide

Bivy sacks are an alternative lightweight shelter for mountaineering in winter and under a tarp in 3-season conditions as protection against rainsplatter. I pulled together this list of the bivy sacks so I could compare them by weight, fabric, and price. Please also note the Fabric Guide below, where I …

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Cocoon UL 60 Vest

Coccon UL Vest

The Cocoon line of jackets and pants is manufactured by Bozeman Mountain Works, a now defunct boutique manufacturer of ultralight backpacking gear. Their UL 60 Vest, shown here, uses Polarguard Delta insulation, a lightweight synthetic material that along with Primaloft, became popular last year with mainstream manufacturers like the North Face. …

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