Sisu is a unique concept that has been central to the identity of Finnish culture for centuries. The term roughly translates to “strength of will, determination, perseverance, and acting rationally in the face of adversity”. It is a term that is often used to describe the Finnish people and their ability to persevere in the face of adversity. It is an integral part of the national identity, and it has been expressed in many ways throughout the years. One such expression is through traditional Finnish tattoos, which have become increasingly popular in recent years.