There are several things that are predictable on a sheep or goat hunt here in AK, steep mountains, a lot of miles to cover, and crazy weather. Even in August and early September I've experienced everything from 80-degree bluebird days to 18-degree blizzards. It's very important to bring a clothing layer system that can cover all the bases. I recommend the fast drying synthetics, although I do bring a wool/synthetic blend wool pullover for when the mercury really drops. Like everything else, good clothing isn't cheap, but one of the biggest myths out there is that you have to buy the fanciest, most high tech camo clothing with everything but batteries to even have a chance at surviving, much less taking a trophy animal. For 95% of mountain rifle hunting, you don't even need camouflage, and if you keep your eyes open, you can get everything you need for a fraction of the cost. For example, this year I wore a set of flat green Mountain Hard Wear pants that were comfortable, tough, and very fast drying for a total of $80, rather than a set of some of the "fancier" pants available that run anywhere from $230-350, and do literally nothing more. You could fairly easily get a complete set of clothing (rain gear included) for around $600 or less, rather than paying well over $1000.