Runners face wild swings in temperature and train through a variety of paces throughout the year. But running pants haven’t evolved to meet these challenges. They're either the right weight, but don’t stretch and cling as you sweat, or they're made of a heavier knit that stretches but overheats even in mild temperatures. The Session Pants, with a unique stretch-knit fabric, are engineered to address these variable conditions: they breathe and wick moisture, all while stretching to match your stride. Whether you wear them for a warm-up or long run, the pants are engineered to feel effortless.