Gugo Fanny Pack is made of waterproof neoprene, is very soft and breathable. Ideal for the gym, travel, riding or just on a walk. With the headphone jack design, you can organize your headphone cable well and listen to songs while exercising. Adjustable waist belt meets different length needs. Large pocket is perfect to storing your daily necessities, like headphones, more than one phone, keys, etc. Gugo Waist Bag makes a lot of sense to have a hands-free way to keep that stuffs!