High Material：Polyester fabric, stretchable, breathable, quick drying, machine-washable, extremely lightweight and softness against your skin and prevents from any crinkle while bend and twist.The material is lightweight so you almost cannot feel it when you put it on Adjustable & Fits All Sizes: You don't need to search for the right size of running waist band anymore.Virgor running waist pack Fits waist sizes from 27" to 44" that ensure It doesn’t move, jiggle, bounce and chafe Large Capacity & Reflective Strip：Carries large phones up to 6 inches, passport, bottle of water, power bank, smartphones, keys,ID and other personal items. Designed with reflector for safety and visibility when you jog at night.The 3M reflective stripe in the front pocket is specially designed for triathlons and marathons Earphones Hole Desgin：The design of the Earphones jack can bring a pleasant and relaxed exercise experience.