From road running to time trials on the track, test your speed limit in these ultralight, 5-inch running shorts. With a supportive inner brief and zipper back pocket. Materials & Transparency Materials Main fabric: 86% recycled polyamide, 14% elastane; Back mesh: 100% recycled polyester; Inner brief: 89% polyester, 11% elastane Supplier Transparency Maxport, Vietnam Key features - Weight: Noneg - Highly breathable and ultra-lightweight materials. - 4-way stretch woven fabric for extra comfort. - Integrated (zip-free) back pocket and key loop. - Antimicrobial inner brief treatment keeps you fresh. - Reflective logo for safe visibility at night. - Perforated mesh back allows for extra airflow. - Adjustable waistband: improve your comfort in an instant. - Light rain-repellent technology - Made for running, training, workouts, and more.