Pearl Izumi Infinity Knicker
Here's what other sites are saying:
Cropped tights are a nice compromise between full-length coverage and shorts. The Pearl Izumi Men's Infinity Knicker improves on an already good idea by placing heavier, warmer fabric in the front where you need it and lighter, more breathable fabric in the back where it's appreciated. Throw in a supportive inner brief and you have a cool-weather run machine, just add runner.