The Comfort Belt Plus makes running easyYour answer to comfy and sleek gear storage on training runs or fast and light trail races. Five size options, stretch fabric and a magnetic closure offer a secure fit for every body type with an easy on/off design, while the zippered phone pocket and pocketing throughout store your essentials so you're prepared for the trail ahead. FeaturesMagnetic front closure for easy on/off. Secure zippered center back phone pocket.2 side stash pockets for smaller items. Five sizes for accurate fit. Materials81% Polyester 19% Spandex Specifications Weight: 2.6 oz. / 73 g | Ultimate Direction Comfort Belt Plus in Onyx Size Medium