Material: Made of durable oxford fabric, which is lightweight and anti-scratch. Perfect for running, biking, climbing or other outdoor sports. Adjustable: A premium adjustable elastic waistband holds the fanny pack securely and comfortably around your waist, reducing chafing. Perfect for waist sizes. Lightweight: Ultra Light-Weight (0.2lbs) and Ultra Slim, thus highly reducing bouncing when exercising. Space: Large Pouch can hold essentials such as Phones(likeiPhone X, 6plus, 5s, Samsung ntoe 8, etc), keys, cards, change, passport or inhaler; keeping your hands free and Snug enough to reduce jostling of items. GUARANTEE - YESO promises 12-month warranty. Return (within 30 days - no reasons), Exchange (The first 60 days - non-human damage). Any problems with your bag, please contact us. We will solve it.