Shelter Snugpak Bivvi Bag — OD

The Snugpak Bivvi Bag is a single-person bivy sack made from Paratex Dry fabric, designed for those moving light in the mountains, on a hunt, or in professional settings where emergency shelter needs to fit in a pack without adding weight. It is widely regarded as an essential piece of kit for alpinism and hiking in unpredictable weather.

A 5 000 mm hydrostatic head rating ensures waterproof performance that holds up through sustained rainfall, while the windproof construction blocks wind and limits convective heat loss. Paratex Dry is a breathable fabric: it allows body vapour to escape without letting external moisture in, maintaining an internal microclimate that slows heat loss through evaporation. This balance is the critical point with bivy sacks: a non-breathable material blocks the wind but builds up condensation, soaking the sleeping bag underneath; Paratex Dry reduces this compromise without sacrificing waterproofing.

Its small packed volume makes it practical as a standalone emergency item or as an extra layer over an existing sleeping bag system to push the lower temperature limit when field conditions turn unexpectedly harsh. Those who do lightweight wild camping or move through remote terrain carry it as insurance: it adds little to the daily load, but if the weather turns or plans go sideways, it covers the night.

Key features

• Hydrostatic head of 5 000 mm: holds through heavy, sustained rain without needing an additional outer layer.
• Paratex Dry breathable fabric: reduces internal condensation that would otherwise soak the sleeping bag used with it.
• Windproof construction: blocks convective heat loss, improving thermal performance even at moderate temperatures when wind is present.
• Compact packed size: carried in a pack as an emergency item without eating into useful volume for the rest of the kit.
• Versatile use: works as a standalone emergency shelter or as an overbag to extend the lower limit of an existing system.

In the box

• Snugpak Bivvi Bag