The bat sleeves are not well shown in the photo. If you've got the right body type it may be flattering, but my hips are on the wide side and the bat sleeves create a pouf of material right at my hip line when my arms are at rest. This creates an even wider look and is distracting as I keep reaching for pockets in this poufy area, but there are none. The material is really nice and better than expected.  It does not appear to wrinkle and has a luxurious feel. The tag on the inner seam says it's cotton, but I'm sure it's something else.