Had mine for about a month now, and I have to say it is excellent. Mine is slightly customized (smaller hood) although I actually think the default size is a smarter option than what I thought up. Mine uses M50, in wide, and weighs in at about 5.4oz on my scale.

I'd never used anything with momentum before, I was more than pleasantly surprised with its water "resistant" qualities. As in, I didn't know you could line a bowl with it and fill it with water and not get the bowl wet. I really don't know how long you have to have this stuff submerged for it to give, but with a well positioned tarp it is pretty amazing. Maybe that diminishes in time or something, I don't know.

I have used a large 25' wide neo-air, and it was still extremely roomy, even though I am a skinny wuss, I am somewhat long and I had an enormous amount of space. Breath-ability is good. I did have a tiny amount of condensation in the morning, but I also live in a coastal rain forest, and this has handled that fact better than anything else I have used in such proximity to my body.

I wouldn't hesitate recommending this to anyone. Considering the weight and price, I have yet to see a better deal short of trying to sew your own.

Edited by Duracellh on 05/14/2012 22:36:51 MDT.

John, I'm interested in an M90 Side Zipper Long and Large w/ netting around the head. Your blog is not accesible to me. Please contact me with total owned and paypal info. Also need a syllnylon tarp about 8X10... can you help me out. You can contact me at applevalleyjoe@yahoo.com Thanks.

I use the Big Agnes Summit Park w/25" wide Neoair.

Hi Joseph,

Sent you an email,
Thanks!

Received my M90 Side Zipper Long and Large today. All that I can say is "Wow". If you're looking for a quality and cost-effective bivy look no further... John at Borah Gear IS the man!

have to give kudos to john and his borah gear bivy s

they are awesome especially for the price

these two are both large wide side zip m 90 models the left one has a regular neo air in it with enlightened equipment reveloution x down quilt with overstuff

the one on the right has a regular big agnes air core pad in it with western mountaineering alder 25 deg down bag being used in quilt mode (which also works awesome)

john builds an awesome bivy and his customer service is second to none

kevin

Edited by divr6347 on 06/12/2012 08:20:50 MDT.

Wow, thanks for the kind words guys!

Joseph,
I'm glad you liked it. Hope you get to take it on a trip soon!

Kevin, it was really nice dealing with you and Jack. Next time I'm down in California we'll definitely have to do some backpacking. Thanks for the picture as well, that looks like a great setup! That tarps putting out some serious coverage

hey john

the tarp is a myog 10x12 silnylon that jack sewed up using silnylon 2nd s from

noah lamports i think he said is checked in at around 20 oz and it was a palace

for two guys to bivy under

keep up the great work with the bivy s after i wear my current rig out ill be in touch to order another

kevin

Finally, I sold some old gear and had the $$ to get one of these for myself! And this will be my first bivy. I went with the regular/regular in M50 with a side zip! I typically only use a regular size (original) NeoAir so I think that this one will be great for me! Now I just hope that I can get it in before a trip coming up...although I fear that it will not be enough time...we'll see...

Hi Chad,

I replied to your email, I can move yours up a few in line to try and get it to you on time. It'll be close, but I think it'll make it.
Thanks!

Nice! Thanks John!

John,

Hope you get a chance to enjoy the fourth. I PM'd for a bivy quote and will hit the order button once I get the final tally. Thanks and happy 4th.

Best regards,
Joe

This is probably bouncing the rubble (as the saying goes), but if anyone needs yet another confirmation for the outstanding customer service and workmanship of Borah Gear, well, here it is!

(If you're curious about the details, this was a custom stripped-down version of the http://www.borahgear.com/cubenbivy.html for emergency use, and also slimmed down for my own proportions. Including stuff sack, only 2.48 ounces!)