Reviewed in July, 2020
Really love the Seamless Down Hugger 900 #1. While this bag is one of the more expensive bags on the list, it is also one of the most quality.
Instead of baffles, Montbell uses their proprietary Spider Baffle System to hold the down in place and preserve the loft of the bag. Stitching is known to create cold spots and let warm air out of the bag; the seamless design solves that and guarantees maximum insulation. The few stitches that remain are slightly elasticized which makes adjusting sleeping positions very easy to do in the middle of the night.
Besides its innovative design, the Down Hugger 900 does a great job at repelling water and moisture. The #3 and #5 models use a GORE-TEX INFINIUM WINDSTOPPER fabric while the #1 is made out of DWR-treated Ballistic Airlight nylon. It also comes complete with a neck baffle, insulated draft tubes and extremely smooth zippers. It's these little extras that give the Down Hugger an edge over other bags. The mummy head and tapered bottom will ensure you maximize heat efficiency.