3F UL GEARUpgrade TYVEK Sleeping Bags Waterproof Ventilate Moisture-Proof Warming Every Dirty Inner Liner BIVY Sack

Great addition to my sleep system, my sleepingo inflatable pad fits nicely and leaves plenty of room for my down quilt and pillow, at right around 6.5 oz this will be perfect for cowboy camping without worrying about a stray shower, awesome extra layer for that 50 degree quilt on a 40 degree night! Zipped up and cinched down this thing might almost be too warm for summer. Make sure to throw down a peace of Polycro, Tyvek is strong but a tear would make this thing useless.

Tried this out when the temp was 69-70° and very windy. I was sweating in my polyester sleeping bag liner I was using as a sheet so I decided to give this a try. It kept me warm and I didn’t sweat in it. I also appreciate that this is soft and not crinkly.Will update as I use it more.

the moisture in. Does not let you breath.

I received a new product and it is great. No cuts or tears and it is truly waterproof. The length given in the FAQs is off by nearly 3.5 inches and the width is off at its widest point by more than an inch. The material is Tyvek and waterproof. The size is quite large and fits my Klymit hammock pad inside which is rather large. Product is well made and the stitching looks good. Will update review after I use it for more details.

The product is well made and looks cool, but it does not work if you are taller then 6' tall. A size long Thermarest neoair x-therm does not fit.