lightest bivy

Try out this one:

http://www.mountainlaureldesigns.com/shop/product_info.php?cPath=22&products_id=39&osCsid=3ab59ec42bf5da889481457f4376d617

Ron makes amazing stuff that shows a lot of attention to detail.

I probably have the "heaviest" one that he has at 13 oz…Soul Side Zip Bivy with all the extras.

Actually, I did not carefully read your whole email.

If you are looking for one that is waterproof, you want to have Ron put on an eVent top to it.

The Soul Zip Zip bivy has an option for eVent, which is what I have with a few other options.

-Tony

The REI Minimalist claims to be waterproof. it’s 15oz

The lightest waterproof bivy that comes to mind is MontBell's Breeze Dry-Tec UL Sleeping Bag Cover at 6.3 oz. Although minimalist in design, I've read nothing but positive experiences from owners. The open hood design really requires a tarp for overhead protection, though. If you aren't using a tarp, you'd probably be happier with one of Integral Design's eVENT bivies (starting in the 18 oz range) or the MLD Soul Bivy with eVENT top mentioned above. Their hoods offer a bit more weather protection.

Hi,

Terra Nova produce one of 210 g (7,5 oz), it's the 'Moonlight Bag Cover'.

http://www.terra-nova.co.uk/Product_Type/Tents/Bivi__Bothy_Bags/Moonlite_Bag_Cover.html

* Waterproofness: 5000 Schmerbers.

* Breathability : 12000 g/m²/24h.

I'm a confirmed tent user – except when using a quinzhee snow shelter or snow cave in winter. THEN I want an e-Vent bivy like the one Integral Designs makes for $240. That could be a life saver in winter.

Eric

You should look into Rab. They have a number of high-quality, light-weight bivvies. Their Ultra Bivi is 225 grams and made of Pertex.If you need super storm proof and high breathability, check out the Superlight Bivi is eVent and weighs in at around 435 grams. They have a number of other Pertex and eVent products.