They do make wools that are preshrunk and don't have to be drycleaned. HOWEVER, I find those too bulky and too heavy. I buy light weight to midway wool shirts. Only they outside layer is camo. You can get them from a number of places. I buy them roomy. I dry clean them once a year at the end of the year. The rest of the season I put them on at the truck and take them off when I return. I spray them and stuff them in waterproof float sacks. Every once in a while on a nice day I go ahead and hose them down or maybe even wash on gentle in a cold wash. I then hang them outdoors and let them air dry. They'll shrink some but not a lot and once you've done it a few times they're good to go. I still have serviceable wool shirts from 10 years ago. You don't have to dry clean.... you just can't wash them in hot water or dry them. I don't care if they're pretty, just warm.