Button down collar - A classic collar where the points of the collar are held in place with buttons.
Fit
Regular fit - Or Classic fit, has a looser design around the arms and chest for comfort and movement. The fit around the waist is straighter and longer than Slim fit. Suitable for most body shapes.
Did you know that cotton clothes actually can be washed, dried and heated several times without any notable marks? But instead of bleaching it, you can easily use lemon juice for stains and vinegar for bad smell. This both benefits your clothes and the environment.