Weight: 150gHighly breathable and ultra-lightweight materials.4-way stretch woven fabric for extra comfort.Zipper back pocket and key loop.Anti-microbial 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 technologyMade for running, training, workouts, and much (much) more.