Of course, sweaters are necessary to keep warm in winter. If the neck is not long, it is recommended to wear a low-necked sweater or a V-neck round neck. Ordinary people may not be able to control the turtle's neck and will look bloated. 172, 150 kg is a little fat, but if you lose weight moderately, eat healthily and lose weight, your collarbone will be more obvious and you will look good in a sweater.