Although this is a cotton/poly mix knit, it does the job as a casual lightweight jacket, good for an exercise class or walk on the beach. More of a Spring/ Autumn jacket - not warm enough for winter weather. The sizes are small, my usual fit is a 2X or 3X, but I ordered a 5X as I wanted it roomy and it is perfect. Covers the butt well. Colours are close to photos, I ordered dark brown, dark green and purple. The only one I sent back was the Cafe Milk colour which was lighter than the photo.