All of our removable and reusable materials would be considered safe for walls, but we do recommend requesting samples to test in inconspicuous areas of your surface before ordering. Painted surfaces that have low-quality paint or walls that were not properly primed may be more inclined to detach from the wall when vinyl sticker adhesive is removed.
Permanent materials can also be applied onto walls, but the strength of the adhesive makes them more likely to pull paint when removed. Permanent materials are only recommended for hard-to-stick surfaces or if you plan to leave the sticker applied for a few years.