Stephen G.wrote a review of Rab 100% Silk Sleeping Bag Liner on March 22, 2013
I used this liner for over a month in below freezing to zero conditions, coupled with a zero degree rated mummy bag. Unless it was on the colder end of the spectrum, I unzipped my bag halfway and still remained comfortable. Its main value was in keeping the down bag clean - my damp socks, gloves and a water bottle slept with me (as well as my sometimes damp baselayer) inside the liner. When it was extremely cold, I kept my down camp booties on as well, and they usually collected some grunge in the evening before I climbed in. Just shook it out in the morning, and stuffed it in the same sack as the bag. The feel of the liner was more pleasant than that of the bag, but the color was a bit odd - seemed more suitable for the playboy mansion than a down bag in the wild...but that's a quibble.