I am 6'2" and wear a 16/35 long sleeve shirt. Bought the medium regular shirt based on the many reviews saying sizes run large to very large. Washed immediately on receipt in cold water, cold rinse and low heat in dryer. The shirt now fits just like my 16/35 long sleeve dress shirts that have been washed repeatedly. The body hangs to the bottom of my rear end (just past finger tips). The body is slim and fits comfortably over a mid-weight short sleeve T shirt (I weigh 163, have a 35" waist). However, if would be marginally comfortable over a long sleeve shirt. If it shrinks any more the body will be borderline comfortable and I'll probably have to leave snaps open. The sleeves can shrink another 1/2 inch and still cover wrist. The quality of the shirt is excellent but is does attract lint. The flannel lining, though seemingly thin (stated 4 oz; their light weight flannel shirt is 4.5 oz), is very comfortable in the sleeves directly contacting skin. Shirt softened (very stiff new) like blue jeans on washing and will likely continue with wear. Overall, very satisfied initially. Will follow up after a few washes. The shirt was made in Bangladesh.
2/18/2013: The shirt continues to soften with repeated washings and wear. The front panels (where the pockets are located) have, since new, each seemed about a half inch short in left-right width making the chest a little snug when snapped closed (really like the snaps; better than buttons by far). Notice the pictures of the front panels on the models in the dark shadow and cottonwood colors; the straight to slightly concave fit is accurate.  Warm and comfortable in 40-60 degree weather in so cal desert worn over a medium thick short sleeve T-shirt. Am considering buying another.