Not 100% as advertised, There are 2 listings on this item, one list it as being 55/45 cotton/poly, the second and the one I placed my order from is listed as 100% cotton ASIN: B0013RK7RU. I was interested in the 100% cotton due to being between the LG and EX-LG sizing and was hoping for some shrinkage by ordering the EX-LG if they were as advertised. As a result I had to return the 55/45 I received. A simple remedy would be to correct the listing showing that they are 100% cotton and to eliminate confusion and unneeded returns. I should note the quality of these pants are spot on and I liked every aspect from the material to the pattern but having ordered this brand in the past I knew that the sizing would be an issue unless there was some shrinkage. Great pants otherwise but the seller should delete the 100% cotton listing or provide it as such. My dimensions are 6'0" 205 lbs and usually get by with a LG or 38" waist, these EX-LG leave me a couple of inches at the waist that I have to take up with the 2 side adjustments and leave a lot of room through out the legs and ass end. I expect these pants to fit loose but expect a very sloppy fit if you have dimensions similar to mine. The LG I have tried in this brand I cannot even get buttoned so they are not an option.