The Sports Portable can give an old seat new life by adding a supportive, ergonomic backrest. The Sports Portable can reduce muscle tension and stress related to sitting in unsupportive chairs and seats! It can be used in stadiums where there is no backrest to lean against. The strapping system allows you to tighten or release the straps to compensate for a non-supportive seat. If unbuckled it can lay flat. When driving with it simply unbuckle and enjoy!