Our window decals go on the inside of the window facing out. They stick using static electricity . . . so no glue and no goo. They can stand up to heat and cold but if your car windows are deeply tinted, they don’t show well.
Our bumper stickers are repositionable and removable for several months. They can also be put on notebooks, computers, filing cabinets, and any other flat smooth surface. They are a great low-cost way to create a group identity.