GoLite is no longer in business, and the Fierce 20/40/60° has been discontinued. If you're looking for something new, check out the best 3-season sleeping bags for 2020.
Excellent, versatile bag with great features.
- Versatility—three different ratings
- Differential fill
- Weight and bulk
Let me start off by saying I love this bag. I've used it all the way down to the low 20s, up to 50-60, and it has always been excellent.
In case you're not familiar, this is a discontinued bag with a separate quilt layer that can be zipped on or off. The bag alone has a 40°f rating, the quilt has a 60°f rating, and combined they're rated at 20°f.
Design-wise, the bag is a pretty typical mummy bag, with a hood with elastic cord, and differential fill (less down on the bottom where it would be compressed anyway) which is good for saving weight. The bag is 650fp down, and the removable quilt layer has a synthetic fill.
The bag is on the heavier side compared to newer offerings due to the 650fp down and heavier fabrics, but I really love the design and would love to see more convertible bags like this. I love having a bag that I can use pretty much all year round except for extreme winter conditions below 20°f (which are extremely rare where I live).
The bag is also very durable and despite being many years old, it has held up extremely well, and I'm sure that it would look like new after a wash with Nikwax.
Source: received it as a personal gift