I don’t write many product reviews, but I am uniquely qualified to write this one: In November of 1994 I rolled my 1968 Bronco on black ice on a winding stretch of Highway 12 paralleling the Clearwater River in Idaho. In that accident I suffered a severe back injury–so severe that the chiropractor that took the x-rays commented that he was surprised that I hadn’t severed my spinal cord. Because of the injury, despite the best efforts of the doctors and chiropractors I’ve been unable to sleep in a bed for the past 11 years. (Any bed is too soft and causes muscle spasms.) Since December of 1994, I’ve spent virtually every night sleeping on the floor in a Wiggy’s  Hunter Flexible Temperature Range Sleep System (FTRSS) sleeping bag. It is a two bag sleep system with two different weight bags that can be used together or separately. I spend roughly 8 months out of each year in the light weight bag, and 4 months in the heavy weight bag.) I’ve slept for more than 4,000 nights in that FTRSS–that is the equivalent of two lifetimes of heavy recreational use for a sleeping bag. (Here is the math: An intensive recreational user probably camps out about 35 nights per year, multiplied by 50 years of camping equals 1,750 nights. Hence, two lifetimes for a bag would be roughly 3,500 nights.) Since 1994, I have spent approximately 4,000 nights–including about 250 nights in the field–in my FTRSS. Again, that is something in excess of two lifetimes worth of use.
The FTRSS has been very comfortable and exceptionally durable. The bag has had ZERO zipper failures, and NO rips or tears. Most importantly, is has never lost its loft or had its filling get clumped or re-arranged, despite countless machine washings. (I should have kept track of the number of times that I’ve washed it!) I highly recommend Wiggy’s brand sleeping bags. The FTRSS models in particular are ideally suited for anyone that expects to give a sleeping bag demanding use. OBTW, I should mention that I have not been compensated in any way for making this endorsement. I’m just a very satisfied customer. If you want the best, buy yourself a Wiggy’s bag!