Professional Design:

1. Adjustable strap that comfortably fits waist from 27.6 inches to 59 inches. 

2. There is a hole to insert the headphone, enjoy the music during running. 

3. Two extra pockets to carry the water bottle and the strap above the pocket can secure the water bottle. 

4. You are noticeable at night because of the reflector straps printed on the belt.