well it's the collar more then anything else, even when I was not chubby I have a big neck.
LOL when I was in high school and was not fat, and stood 5, 11 and weighed 185 pounds with a 17 inch neck, it has only gotten bigger sadly to say.
Now to find a shirt that is big enough for my neck, lol I have to go to big and tall, I think the last time I checked it was 21 inches? that was 40 pounds ago though (heavier so maybe my neck shrunk) Still, the 21 inch neck shirts are for HUGE guys, and my neck is not proportinal to my body lol, so the shirts are like tents! I can hold them out at least ten inches to the sides!!
LOL now you guys prolly think I look like some kind of mutant!