1. Design: This fanny pack comes in a variety of gorgeous colors. Ultra-light design, but with special headphone jack and reflective strip, no bounce, won't ride up, keep you and your smartphone safe.2.Material: High quality spandex lycra, stretchable, breathable, quick-drying, machine washable, extremely light and soft, prevents any wrinkles from bending and twisting.3. Size: One size fits both men and women. The adjustable elastic has a non-elastic stretch of 25.2 to 35.4 inches, and the elastic stretch can be extended longer to fit 25.2 inches to 50 inches, making sure it doesn't move, wobble, bounce and rub.4. Waterproof: Sweatproof and waterproof in almost most weather conditions during outdoor sports, do not soak in water, can not resist heavy rain for a long time.5. Matching: Suitable for most sports, exercise, jogging, walking, running, hiking, cycling or other outdoor sports. Holder for cash, cards, keys and most smartphones