This summer I found some excellent bib shorts, and rather than buy tights for cold weather I bought leg warmers. Voler. Good stuff, and works as advertised.

Except that the damned things tend to slip down after several miles of riding, leaving a band of skin between the short's gripper and the top of the leg warmer. And they do fit, so it's not an issue of sizing. Any ideas out there about how to keep them up?