I have a pair of the Pronghorns, but I don't think they're 1000 gram. I thought they were 600 or 800. I left them in NY last trip so I can't look. They're really comfortable. I wear rubber when I'm into more scent control but I wear the Danners when I'm in to more foot enjoyment. I really don't consider them a real cold weather boot. I have another pair for that.