The internal structure of the bag: zipper pocket, mobile phone bag, document bag, sandwich zipper bag Opening method zipper material: polyesterFunction: breathable, waterproof, storage, abrasion resistance, anti-theft, shock resistance, burden reductionLining texture: polyesterSize: see the picture below Document Bag, Workout Bags, Swimming Workout, Mobile Phone Bag, Zipper Bag, Anti Theft, Women Bag, Zipper Bags, Newest Trends