These - I bought two - seem to weigh more than other sweatshirts I have had over the years. Not thicker, but extra density ? The arm length is also quite generous and the over-all fit is very comfortable. As a lifelong sweatshirt wearer I will definitely be buying more of these particular ones in the future. When compared to some of the other sweatshirts on the market, these are in a higher league as far as quality is concerned.Eamonn