From Patagonia:

For the runner who needs versatile running shorts, the Nine Trails Shorts are made of a lightweight recycled polyester/spandex blend that breathes, wicks moisture and moves comfortably. Fair Trade Certified™ sewn.

• Durable 91% recycled polyester/9% spandex stretch-woven blend; Fair Trade Certified™ sewn
• Body fabric treated with a DWR (durable water repellent) finish
• Waistband with wrapped elastic and clean aesthetic for improved look and feel on body; external drawcord for secure fit
• Center-back secure zipper pocket with elastic key loop
• 1" side scoops improve range of motion
• Reflective logo on left hem; 4" inseam
• Fair Trade Certified™ sewn
• Made in Vietnam.