Don't let scorching temperatures stop your pursuit of excellence. The Mountain Hardwear Men's CoolRunner Short keeps you cool and comfortable when you're running and training. This short features 4 way stretch Ultralite plain weave fabric for maximum mobility without unnecessary weight. Providing an immediate cooling sensation the minute you slip these shorts on, Cool Q Zero Stretch lining adds comfort on the hottest of days. Mesh side panels promote rapid cooling by channeling outside air into these shorts, and a DWR coating repels light rain when you encounter mid run storms.