bivy condensation

My bivy use is limited to the USGI bivy. The only time I see condensation with that one is when I breath into it so I haven't experienced the problem you're describing.

An old trick I learned in the military to help keep my feet warm was to put them in a waterproof bag. This creates a VBL of sorts but only comes up knee high so I wasn't swimming in it.

If your condensation problems are limited to your feet, try sleeping with your feet in a garbage compacter bag or cut off the bottom portion of a SOL emergency bivy but use it inside your sleeping bag.

If that doesn't work, you may want to add better ventilation to your bivy ala a noseeum netting strip down the middle. I believe Chad Poindexter did this to his Borah M50 bivy; you may want to reach out to him to see how that worked out.

why are you using a bivy if you already have a shelter over you?

Perhaps the puffy made you slightly too warm in the feet area.

That's enough to create major condensation. Possible?

i run a pyrmid shelter, bivy provides floor, protects bag from incidental rain and wet gear, keeps it clean, and most importantly, keeps me on my pad during rodeo sleeping.

thats possible, i didnt have it in the foot the night before, or other nights ive had condensation though. i like to put on a warm jacket when breaking camp for an early start.

ive considered trying this. my only worry is the damp enviro keeping my feet damp and therefore soft. maybe that isnt the case, but its what has stopped me so far.

I use bivy under pyramid for same reason

M50 which is DWR and somewhat breathable

Never really notice condensation

WPB bivies are less breathable

if it's really cold, you'll get more condensation

If you have too much insulation you'll sweat and get more condensation

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so all that makes alot of sense. going forward what can i do? i really like being in the bivy and staying on my pad. something that i was never able to do before.
secondly, i dont have the balls to run a lightweight bag in the cascades as i never know what its actually going to do. some nights its 45. some nights its 27.
my bivy is the tigoat raven. im not sure if it is the older pertex or the new impetus. would a more breathable bivy help or am i just chasing my tail down that road

my buddy, who runs a complete different body temperature than i, had no condensation either night (marmot helium/borah m90 bivy)

hes a cold during the day, warm sleeper vs i run 1000* all day and freeze all night

Does your bivy have WPB fabric? Is there a membrane? or is it just fabric?

If it's WPB, then maybe you should get a more breathable bivy.

Can you try your friend's and see if you get condensation?

Hate to go buy something new and then find it has the same problem.

i could possibly try his although in my research of the fabrics they do not appear very different.
heres the fabric description
The top is made from Aspen Green Impetus 1.1 — 15d x 15d silicone treated fabric that is highly
water repellent and breathable. The bottom is Dark Grey Impetus 1.2 — 15d x 15d waterproof
fabric that is silicone coated one side and PU coated on the other.