-Cool on the comments -that sea to summit ether light sounds epic.
ok a couple of things - I tired this test more than once. the first time I tired it -no snow same cold temps. I used a mylar emergency sheet under the tent, I had a foam Yoga mat and some of that mylar bubble wrap type insulation -that wasn't too good due to not having an air mattress. I also used the military issue 3 piece sleeping bag - it was cold, I was cold and overall -I should have done better...the second time I did the same test is when I got snow, and over night temps of 16 above about the same as the first time- that time I used the same mylar sheet under the tent, I used a military issue air mattress or I think I used a second one from klymit static V (I think it was the Static V since I had the $40 military mattress on order for some reason) - $40 on amazon...I also switched out using the military issue MSS sleep system for my 2 piece Wiggys bag that I think just kept me warmer. both times I used USB hand warmers to help keep warm.
I still need to test again as soon as this sinus stuff is over (been a little messed up since that Ohio chemical blast) - I want to test a setup and try that candle system for heat. I wanted a tent stove, but resources are limited to my rigging something up or finding a cheap alt way to make something happen. it's like I have a coleman propane powered double burning camp stove, a small alcohol burning stove, that candle setup, and even have a big buddy that runs on the 1lb green tanks- will it work? on low likely for about 5 hours...will it gas me? idk. at some point, I don't want to throw money at any situation, I want to focus on skills and ability.
usually if it was warmer I'd be using my hammock rig -I've had good luck being inside that hammock tent system from Hennesy hammock. I'm too cheap to afford the under blanket stuff. what I used before was a foam PT mat with a second layer of that insulation for homes - mylar reflectix - the sleeping pad allows you some comfort sleeping diagonal so your feet don't end up above your head all night. hammocks are hard for me at times since I move around, and get up at some point to make water...I've had that happen a few times -slept comfortable until I've moved around and had my back against the screen for the mosquitoes - that feet above your head thing will about mess you up...you'll wake up with a bomber headache. Nice thing about hammocks is getting off the wet ground and away from bugs. I'm going to have to find my pictures and see about posting about a hammock review.
back to that ICS tent - it's got a floor - but it's not insulated. The floor covers the sleep area -fully. the vestibule area is open no floor...good to keep your backpack dry or likely put a candle.
this was the air mattress I think I used the second time-
https://www.amazon.com/Klymit-Lightweight-Backpacking-Inflatable-Non-Insulated/dp/B007RFG0NM/ref=asc_df_B007RFG0NM/?tag=hyprod-20&linkCode=df0&hvadid=194838933099&hvpos=&hvnetw=g&hvrand=14260310893223546483&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9007090&hvtargid=pla-310743501520&psc=1I used this over a foam Yoga mat (it's a little thicker then a PT mat from the military surplus stores)
https://www.amazon.com/REFLECTIX-BP24010-x10-Foil-Insulation/dp/B000BPF22U/ref=asc_df_B000BPF22U/?tag=hyprod-20&linkCode=df0&hvadid=167138746282&hvpos=&hvnetw=g&hvrand=1591650745263230750&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9007090&hvtargid=pla-312007480985&psc=1this yoga mats are cheap- $4-10 on Amazon -this one is like $5.
https://www.amazon.com/QCool-Thick-Durable-Yoga-Mat/dp/B092CJF4P5/ref=sr_1_19?keywords=black+yoga+mat+under+10+dollars&qid=1676826278&sr=8-19one of my biggest issues is trying gear out before using in the field- for the same reason as one of the other posters saying it... I have this tent - but I've never used it. This is a really good time to test out whatever your planning on using, and making sure it works before things get worse. I wanted to see how well the ICS held up over cold, with snow, and I've tired it out a few times in light rain. it doesn't leak....I'm kind of worried that it's been in the bottom of my backpack and I've been getting on the treadmill a few times every other week so things might not be good next time I try it out from friction inside the pack. after I go drop a radio part off at a friends - I'm going to have to dump my gear and check things out tonight.
-MFitzy111