Reviewed in March, 2020
LONG TERM REPORT
The EX Light performed well during Long Term Testing and has become one of my favorite winter jackets, thanks to its warmth, wind resistance, and ultra-lightweight design. Having said this, I highly recommend donning a waterproof shell if snow and rain are in the forecast. The reason is that snow and rain can soak through the shell and into the down insulation, ruining its loft, since the shell has a DWR coating only and no sealed seams, so it isn't waterproof.
Having never owned a down jacket before, I was thoroughly impressed with the performance of the EX Light. The down insulation did a great job of keeping me warm throughout testing while still allowing moisture to escape. It also kept me comfortable through a wide range of temperatures, from below freezing to the low 50's F (11 C). When I wasn't wearing the jacket, I stuffed it in my pack or used it as a pillow and it held up well. Of course, durability is just one of the selling points for down compared to synthetic insulation. Down is also considered the insulation of choice for absolute warmth and when weight and space savings are a top priority.