Zipper no longer works on back pocket From website: Features NB DRY fast-drying technology wicks moisture away from your body to help you work out with ease Internal brief with seamless constructed fabric allowing for fewer seams and a distraction free run External back zippered pocket and two internal drop-in pockets to stash your run essentials Elastic waistband with adjustable drawstring Reflective details Imported Material Perforated four-way stretch woven shell 86% recycled polyester, 14% spandex