Ditto on what others have said. I purchase clearance shirts...the wilder the colors the better. I wear MTB shorts during the warm months.

In the winter I wear poly long underwear and mock t's designed for cross country skiing. I layer on wool pants or gortex wind pants depending on the weather, and a wind bloc fleece with wind jacket (bright yellow) on the top side.

It is all about being seen.

Enjoy!