Foam tape is a type of adhesive tape made from a flexible foam material. It is often used for insulation, weatherproofing, or as a cushion for vibration dampening. The thickness of foam tape can vary, but 1 inch is a common size. It can be used for a variety of applications, such as sealing gaps around windows and doors, or attaching signs and posters to walls without causing damage. It is also commonly used in the automotive and construction industry for insulation and soundproofing.