Features: -UV 50+ protection Fabric: 82% nylon/ 18% spandex Size chart: : Height from the seam at the bottom of the collar to the bottom of the sweater: 10'' 1/2 Chest width from armpit to armpit: 20'' Length of sleeve: 10'' Neck opening: 4'' ¾ Height from the seam at the bottom of the collar to the bottom of the sweater: 11'' Chest width from armpit to armpit other: 21'' Sleeve length: 11'' Neck opening: 5'' Height from the seam at the bottom of the collar to the bottom of the sweater: 11'' 1/2 Chest width from armpit to side: 22'' Sleeve length: 12'' Neck opening: 5'' 1/4 Height from the seam at the bottom of the collar to the bottom of the sweater: 12'' Chest width from armpit to armpit other: 23'' Sleeve length: 13'' Neck opening: 5'' 1/2 Height from the seam at the bottom of the collar to the bottom of the sweater: 13'' Chest width from armpit to armpit other: 24'' Sleeve length: 14''