86% Polyester, 14% Spandex Pull On closure USE CASE: Wear these comfortable and versatile athletic shorts for walking, running, in the gym, or lounging around the house. The hidden cell phone pocket on the inner liner shorts eliminates annoying phone bounce while you're working out. BUILT-IN COMPRESSION SHORTS: Integrated compression liner shorts provide added muscle support and eliminate uncomfortable bunching under outer gym shorts. The liner shorts feature a side cell phone pocket for extra secure, bounce-free comfort while running or working out. ALL-DAY COMFORT: Proprietary 4D stretch compression fabric delivers unrivaled stretch and recovery, for compression clothing so comfortable you'll want to wear it all day. With UPF 50 for added sun protection. ODOR CONTROL: Patented Copper Znergy fabric technology provides increased odor control. It's 100% infused into all of our garments and won't wash out. WICKING & BREATHABLE FABRIC: Designed to wick sweat and breathe well, so you stay dry and comfortable throughout the day.