I spent many hours researching the size and measurements. I think Columbia could do a better job with posting the sizes and all measurements for each size. I normally wear womens XL T-shirts (42D chest) and I ordered this jacket in 1XL. I shouldve gotten 2XL cause the 1XL is snug if Im wearing a sweater or many layers of shirts. The thickness is the same as all other fleece Columbia zip ups. The hood is the best feature and reason I bought this. Its longer than the usual Columbia fleece jackets, Im 54 and it covers my butt completely. Longer than usual sleeves which is nice. The bottom flares out and does not have an elastic cord to tighten. The color is not a true black, its a dark grey. Overall nice fleece jacket, just wish I wouldve bought the bigger size.