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Manufacturer's Description

MSR's AC-Bivy is one of the lightest bivies on the market.

* All-condition protection
* waterproof/breathable top
* DuraShieldil-coated floor
* Zippered mesh closure, allowing great ventilation while maintaining bug protection

Visit MSR's AC-Bivy page.

Retailers' Descriptions

Here's what other sites are saying:

When weight and space really count, the MSR AC Bivy is the best and most efficient way to get the all-condition protection you need. Maximum waterproof-breathable fabric coverage delivers the best possible breath-ability, while an extra-tough floor with our finest, 10,000mm DuraShield coating lets you rest confidently through anything. A zippered shoulder entry with mesh allows excellent bug-free ventilation and makes it easy to get into and use while sitting up.

- CampSaver.com

The AC-Bivy from MSR is a super lightweight waterproof, breathable bivy that provides an all-condition refuge. Minimalists can have full-on, durable protection for a mere pound! Top material uses a waterproof, breathable coating bonded to a tough yet lightweight ripstop nylon. Durashield(TM) polyurethane coating provides incredible waterproofness on the exceptionally durable nylon floor. Factory tape seam sealing provides absolute in waterproofness and out-of-the-store readiness. Envelope-style opening overlaps to provide a lightweight and simple entry; zippered mesh panel at the top end provides insect protection. 3D footbox provides ample room for campers with large feet, and comfort for everyone. Stash up to a medium-size pack in the hood area while you are inside; opening is situated to fit where your face is with the pack at the head for easy access. AC-Bivy fits you, your sleeping bag/pad and your pack!



Minimum weight 1 lb 0 oz / 450 g
Packed weight 1 lb 2 oz / 510 g
Length 7 ft 4 in / 220 cm
Width at head 3 ft 0 in / 91 cm
Width at foot 1 ft 11 in / 58 cm
Sleeping capacity 1