Wondering what the best synthetic bag for the 3+ season use is? Well look no further; the Hyper Cat truly impressed our entire review staff with its weight and packed size for a synthetic bag, blowing most of its competition in this category out of the water. In fact, the Hyper Cat is comparable but more often lighter and more compressible than most down models that feature 600-700 fill power. The Hyper Cat draws its name from The North Face's long-running Cats Meow line of sleeping bags, but this newest model is a more focused bag, cutting away everything extra to minimize weight.
The Hyper Cat features a more slender cut, a half-length zipper, and a unique insulation design, which minimizes the number of stitches and the volume of insulation required. The Hyper Cat's only disadvantage is at $240, it's on the spendy side for a synthetic bag. While it drys in 20% the time of treated down, its synthetic insulation (like most others) isn't near as long lasting as down.