1. Adjustable Belt: This adjustable belt fits your waistline and. Fits your waist size and the buckle closure makes it easy to put on and take off. You can adjust it to suit your needs. Both men and women can use it for outdoor sports.2. Waterproof: This fanny pack has a nylon surface, your inner items will not get wet even when used in the rain. Inside is a breathable mesh pad to keep your waist dry. This is a must have for your outdoor activities.3. Stable Water Bottle Holder: This fanny pack also has a water bottle holder to keep you hydrated during marathon, hiking, climbing and running. You can put 500ml water and beverage bottles in the bottle holder.4. Safety Design: This fanny pack has a reflective strip design on the surface. When running at night, the reflective stripes act as a warning to prevent collisions with passersby. This allows you to exercise without worry.5. Convenient Design: This fanny pack contains a headphone jack and a zippered main pocket. You can listen to music while exercising, giving you a better workout experience. You can put your belongings: keys, mobile phone, earphones in your pocket. The zippered design won't let you lose your stuff.