I've already endorsed sweat pants because everyone deserves to be a lazy bum once in a while. As long as you remember to still keep everything together there is no reason that a classic gray pair can't serve as the foundation to a great kit. Just look at Mr. Mort below modeling a pair from Mr. Mark McNairy. The white button down, blazer and dirty bucks with hiking laces are so on point that the sweatpants don't detract from the look. I'll admit it helps that those sweatpants were designed by one of the best guys working today, but I'm really digging this. Sometimes we take this stuff so seriously we forget that comfort and a sense of humor win out at the end of the day. If the Japanese can do it why can't we?