This is a bolero for children's size 160, but adults can wear it too. The width is about 43cm, the length is about 40cm, and the sleeve length is about 37cm. The material is 35% cotton, 22% nylon, 13% rayon, 10% wool, 8% mohair, 8% acrylic, and 4% angora. It would be good to wear over a sleeveless dress.