User Review: Wiggy's Super Light FTRSS
Temperature Rating: -40 F
Weight: 5.5 lbs
Price Paid: $330
Excellent system in that it is three bags in one. The outer layer (2.5 lbs) works well down to freezing, the inner layer alone works well down to about 0 deg F, and the two combined I haven't had to use yet! Used the inner bag alone down in Chile's southern region of Tierra del Fuego, with a bivy sack and no tent and slept comfortably.
The bag is not high tech or stylish, but it gets the job done well. It compresses very compactly, is machine washable and dryable, and comes with a lifetime guarantee. It even comes with a pillow!
There are lighter, more stylish bags on the market, but none that work any better. The temperature ratings are very accurate.