I just learnt that apparently some people do not wear layers underneath pullovers/sweaters. What the...! Isn't the point of this garment that you wear it over your top if it's too cold with only the top. And then if it gets too warm you can take off the first layer! But you can't do that if you only wear one layer. You'll get super sweaty in the sweater and then you have to launder it after each wear.
If you do this, explain yourself or something 