First off, this isn't a sweater.  It's barely even a light weight top.  The fabric is actually thin enough that if I hold it up, I can see right through it, even  though it's very tightly knit (and so shouldn't be transparent).

It is, however, extremely soft (and I say this as someone who finds even some cashmere too scratchy), and the color is quite nice (I ordered it in blue), so I'd be quite happy with it as a summer garment if only it fit.  If it were simply the wrong size, I wouldn't hold it against them.  However, not only is the small about three sizes to big for me (it fits about the same as most of my mom's clothes, and she generally wears 2-3 sizes bigger than I do), but if it weren't otherwise too big, the sleeves and body would be significantly too short.  Since the shoulder seam falls about 3 inches down my arm, the sleeves are the perfect length.  However, if I pull the shoulder seam up where it belongs, the end of the cuff is over an inch above my wrist, even with my arm straight, and given that it has a 2.5 inch cuff, it should come down at least at inch or two past my wrist.  Similarly, if I lift up the top so that the bottoms of the sleeves are somewhere in the general vicinity of my arms (where I assume they're intended to be), the bottom of the garment falls barely below my natural waist -- a bit too low to be a crop-top, but far to high to wear as a normal sweater.

If you're under 5 feet tall, slightly overweight, and live in a desert, I'd highly recommend this sweater.  Otherwise, save your money.