For reference, I am 5'3"/160 cm tall, I weigh about 102 lbs/46 kg, and my waist measurement is roughly 24-25 in/61-64 cm. I ordered this sweatshirt in the color almond, which is one size only. The material of the body of this sweatshirt is pretty soft and moderately thick. The band around the neck, the wristbands, and the band around the bottom of the sweatshirt are made of a really thick, stretchy material. There were no loose threads when I got it, and it seems to be pretty well made. The only warning I would have is that the sweatshirt fits me very slightly oversized, and I am a fairly small person in both height and build. See the attached image for reference!