This bag was designed for travel, but my elderly mother used this instead of carrying a purse. She could fit her phone, cash, credit cards, etc. in the bag and wore it around her neck, hands free. The neck strap length is adjustable. There's a small zipper pouch on the outside - perfect for a key and coins. Inside there's two pouches to drop things in like your phone and one zipper pouch. The pouch stays closed with velcro. Closed the pouch measures 8 inches tall x 4 3/4 inches wide. I'm not sure what the material is, but it feels like a cotton/polyester/nylon blend. Thanks for looking.