1: Paper wallpaper, the paper is reinforced with nylon fibers making the wallpaper stable, meaning that the extra adhesive can be applied directly to the wall or the back of the wallpaper, which makes the installation same as traditional wallpaper. 2: self-adhesive wallpaper that is easy to apply, reposition, and remove. Simply peel and stick onto recommended surfaces. Vinyl is totally washable, you can wipe it with clear water all the time. Print with Roland High-Quality Printer machine, Quality control. FREE Standard Shipping: 9-12 Days* We make a 30 business days Money back guarantee after you received your mural. However, we do not accept refunds for changing minds or giving wrong details. Because your wallpaper is custom made to fit your wall which means it cannot be returned. However, if you are not satisfied with the wallpaper, please contact us, and we will try to help you in any way we can. What if there is a problem with the wallpaper? Printing wallpaper is an advanced process, and on rare occasions, mistakes can be made. Always check the wallpaper before hanging to ensure there are no production defects. If an error is found, please contact us, and we will replace it with a new one, free of charge (we will require photos of the damage). It is essential that you have not started hanging because we're unable to reimburse installation costs or problems from incorrect wallpaper hanging. It is essential that the provided instructions are followed to ensure the best results are achieved. We also recommend you use the supplied adhesive or an adhesive that is designed specifically for woven wallpapers.