Hilleberg has had a waterproof/breathable Bivanorak (combination bivy and anorak) in their line for years. Intriguing multi-use concept, but heavy by ultralight standards. (See our review here.) Starting in 2006, Hilleberg will also offer the Bivanorak in a water resistant and breathable material that brings the weight of the garment/shelter squarely into the ultralight range - 11.3 ounces.
The Bivanorak looks like an anorak on the top - sleeves with drawcord adjustments, hood, zip front with windguard - and extends to below the feet with a drawcord closure so that it can be used as a survival shelter or a sleeping bag cover. The bottom can be drawn up, as in the top photo, and worn as a cagoule. The fabric is wind and water resistant, but not waterproof.
Bo Hilleberg wearing the Bivanorak fully extended.
"Hilleberg Bivanorak (Outdoor Retailer Summer Market 2005)," by Carol Crooker. BackpackingLight.com (ISSN 1537-0364). http://backpackinglight.com/cgi-bin/backpackinglight/hilleberg_bivanorak_orsm05.html, 2005-08-14 03:00:00-06.