To provide sporting goods capable of noticing and informing user of the necessity for maintenance or the service life, and preventing a sudden failure or breakage during the use in advance by providing a means for informing user of the degradation of the reliability which can not be judged from the appearance in a visible manner by user.

In the sporting goods used in a natural environment such as a water side, an indication layer 3 is formed on at least a part of the surface of a body 1, a cover layer 5 formed of a decomposable material such as a poly-lactic acid to form the indication layer is provided. The cover layer 5 of the sporting goods is decomposed according to the service condition, the indication layer 3 becomes visible in the visual change. A user can be noticed or informed of the necessity of the maintenance and the service life by making the decomposition speed of the cover layer 5 match with the decomposing speed of the reliability of components of the body 1.