Difference between the Soft Ivy Button Down, Colorado Button Down and Button Down
The Soft Ivy BD is our tallest button down collar, the standard Button-Down collar is a step smaller, and the Colorado BD is our smallest version. The Soft Ivy BD and Colorado BD both feature soft, unfused interlinings while the Button-Down has a fused construction.
The Colorado BD and Soft Ivy BD are probably the best for casual wear, with the former being better if you want something smaller while the latter is great for those who value something that stands up taller and has a nice roll to the collar expression.