Material: Mainly Eco-friendly Washable Kraft Paper (made from natural paper fiber) Plastic/synthetic or non-environmentally friendly materials kept to minimum or avoided whenever possible Features: - Easy insert and removal of passport while clearing customs - Big pocket to hold boarding pass- Multiple card slots- Material is tear-resistant, scratch-resistant and washable- Parts are stitched together to provide joint durability; instead of using glue which may decompose/lose adherence with time/usage...