I ordered 2 pairs of their Kanab 2.0 pants (tan and their camo) and I tried size Large. I am 5'10" weigh 180# and wear 34" waist jeans. The large fits me where I need to wear a belt to keep them from scooting down while I walk. I feel they fit perfectly to be able to wear some wool leggings and tuck in a wool shirt and maybe another **** as well. They are thin enough to be great for early season, yet they will be warm enough for later in the year with wool leggings. I purchased these pants, 2 pairs of wool leggings from icebreaker, 2 wool undershirts from firstlite, heavy Asbell wool jackets, and a windblocker vest and jacket from Cabelas all at the same time. All of them seem like they will be perfect for what I need them for. CRS the pants will be great for you in the hills and prairie for a lot of the hunting season. I lived in Rapid for several years recently and these would have come in handy a lot.