NEMO claims to have found a fabric with breathability similar to eVENT. Shown is the 2007 GoGo bivy shelter in the new lime green fabric. At a 2.1 lb packed weight it is very competitive with other front hoop bivies. Of course, NEMO has made a few other tweaks since the 2006 model.
It’s been about a year since ultra-breathable eVENT fabric was pulled from US and Canadian shelter market. It didn’t meet fire retardant standards for a “dwelling.” This is a shame. We at BPL felt it was the clear breathability performance leader for a shelter fabric. Since eVENT was pulled, manufacturers of high-end single walled tents have been searching for a replacement fabric with similar breathability (or finding ways to market a suspiciously similar fabric but not branded as eVENT).
NEMO claims to have found an eVENT replacement from fabric manufacturer Itochu. Brendan Condit of NEMO says that “independent lab tests confirm the Itochu fabric has similar breathability (just a few percent lower Water Vapor Transmission Rate) than eVENT and is much easier to seam seal.” At the booth he showed us a half page synopsis of the test results, but no lab was given nor was the test method specified. NEMO said they would forward the test method and detailed lab results to us. Until then, we have no way to substantiate their claim of breathability in league with eVENT.
Even so, the Itochu fabric is probably quite breathable and a good choice for a single-walled waterproof breathable fabric. NEMO will use it for their GoGo 1-person Bivy, Hypo EX 2-person tent, and Morpho AR 2-3 person tent.
Hanging upside down from the ceiling is the 2007 2-peson NEMO Hypno EX also with the new lime green Itochu fabric. It is 4.2 lbs packed weight and has 31 ft2 floor area.
NEMO is also improving the performance/inflation speed of a new foot pump for spring 2007. We looked at several prototypes of this essential piece of equipment for Airbeam inflation. Neither of the pumps shown is exactly the final design.