A violet turtleneck and chinos are totally worth being on your list of indispensable casual styles. Finishing with white athletic shoes is a simple way to add a more laid-back vibe to this ensemble. Keep this ensemble ready to go when spring arrives, and we guarantee you'll save a lot of time racking your brain for what to wear on more than one occasion. And if we're talking casual outfit ideas for maturing gentlemen, this combination looks good on most.