Name: Velcro waist packAdjustment range: 68cm-140cmWeight: about 100gMaterial: stretch breathable fabric + waterproof fabric Packaging: transparent zipperbag packagingFunction description: can device cell phones, bank cards, change and other smal!items on the go. Stretch, breathableFeature1, reflective trademark: The use of bright night reflective film at night lights light reflective safety, high vigilance2, automatic locking zipper: automatic locking zipper after locking the zipper to prevent automatic opening of the zipper3. Key chain design: The design of the key chain in the small pocket on the left side prevents the key from sliding and shaking the environmentally friendly plastic key chain4, anti-sweat fabric: the back uses anti-sweat fabric design to prevent sports sweat into the phone breathable, waterproof, anti-sweat fabric5, adjusting square buckle: the right side seam adjusting square buckle can be freely adjusted the size of the environmental protection plastic buckle6, Velcro: back using Velcro adjustment design, simple and convenient to wear the new way of wearing