"This short gives me all the tech I need on my summer runs. Ultralight material that breathes exceptionally well and gives me a little wind and rain protection." -Gearhead(R) Expert Alex Extending our popular MTN Air line, the Backcountry MTN Air Ripstop Short lets us run light and free when the trail calls our name. The Pertex Quantum Air fabric is both wind-resistant and breathable to keep us cooler as we're chasing our PB or running exposed ridgelines with the sun beating down on us. The short's ripstop fabric fends off grabbing vegetation while staying lightweight and stretchy-just what we need for freer, more comfortable runs.