The kit for creating a lumbar support belt includes a dorsal element intended to be placed against the lumbar region of an individual, and comprising reinforcing members a set of strips of elastic textile that can be positioned around the lower part of the trunk of the individual and comprises assembly means able to collaborate removably with complementary assembly means formed on the dorsal element. Each of the strips has a certain number of structural characteristics, with at least one structural characteristic differing from one strip to another within the set of strips. The kit makes it possible to create a lumbar support girdle comprising the dorsal element and a single strip chosen from the set of strips according to the structural characteristic desired.
