Designed for Running and Training OOM (Out of Mind™) liner has a built-in pouch for support and a no-bounce phone pocket with cord exit Stash your shirt in the waistband loop Secure zipperless back pocket Reflective details Lightweight, Swift Fabric(Click to Close) Lightweight Four-way stretch Sweat-wicking Quick-drying Abrasion-resistant Thisxa0product contains recycled polyester made from repurposed plastic waste Materials Body: 86% Recycled polyester, 14% Elastane Liner: 82% Polyester, 18% Elastane