1. High quality and comfortable wearing: polyester lycra fabric. Not only durable, but also lightweight and compact for your run.2. Adjustable Shoulder Straps: With adjustable elastic straps, it fits most waist sizes. Breathable material keeps your body cool. No bounce, no chafing, no mess.3. Ample Storage: A large compartment and a small front pocket provide independent protection for your phone against screen scratches, cash, keys and watches from water, sand, dust and dirt. Running, hiking, cycling and other outdoor sports are easy and worry-free.4. Double-layer large pocket, can hold up to 7 inches mobile phone