The kanreki is thought of as “the age of rebirth,” or “the age of returning to a new life span,” and is associated with the meaning of “returning to a baby. It is called “kanreki” because the zodiac sign of the year of birth comes back again. The red padded sleeveless kimono jacket and hood are used for baby clothes because they are easy to put on and take off and easy to move, and it became a custom to present a red padded sleeveless kimono jacket and red hood to celebrate “rebirth. Here is a free illustration of an old lady wearing such a red chanchanko and hood.