I'm 5'11" and 218 pounds. The recommendation was Large for an individual 6' 0" and 215 which is darn close so I went with it. They fit OK standing and walking but were a bit tight for sitting, bending, climbing, squatting, etc. I would say their Large would be more suited to someone under 200 lbs, maybe even 185. I also wasn't a fan of the way the liner sticks out below the short and the fabrics cling together causing the short to ride up. Returned them and ordered the TSLA running short without a liner.