Introduction: 1. Size: 100"(H)x144"(W) (254x365cm). Then select the corresponding quantity. 2. You don’t need to be professional. Finish it with a friend will be much easier. Do not peel off the entire liner backing at once. Peel off 1 to 2 feet at a time and work your way down. 3. Notes: Colors can vary slightly due to different light and display. The image is only a reference. Due to the manual measurement and different measurement methods, please allow 1-3cm deviation. Thank you for your understanding. 4. Please ensure that the product should be used only on smooth, grease-free surfaces before stick. The paper is suitable for most rooms except high moisture environments, like bathrooms. Please wipe it with a damp cloth, then make sure the wall is dry before sticking the wallpaper. We are a professional manufacturer. Wallpapers of any size or style can be customized. If you have any needs, please contact us.