Good, almost great
I load this thing up every other day at dawn for a kick and glide trek to noon before the snow gets sticky. The size and capacity are perfect. The zip sheath and insulated tube keep freezing a non issue. The only knock I have on the pack is the three way zipper system. I like how easy it makes loading when the pack is unzipped, but because of the nature of how the three zippers meet, I don't like how the pack is never really closed - that kinda defeats the point of a zipper and I'm a little weary of how dry everything will be if I hit sleet. It hasn't been an issue so far, but I'm not going to bother using this as a quick hike pack in the rain months.
Great pack - just change the zip system and they get another star.