I so wanted to keep this sweater but the invisible metallic threads that give the sweater its crinkled appearance are super scratchy and irritating. it definitely requires a long sleeved top to prevent the irritation as shown in the online photo. it is lightweight and i planned to wear it over sleeveless summer tops/dresses. i have averaged size arms and there was plenty of upper arm room. in fact extra room is designed into the sleeves. one plus for those with upper arm fit concerns. the lower