The present invention concerns a retractable covering system suitable for covering a handling element protruding from the neck of a product reservoir, said system comprising an assembly ring defining a longitudinal axis and an axial direction; and a cap translatable along the longitudinal axis relative to the assembly ring between a deployed position, in which it extends substantially protruding relative to said ring, and a retracted position, in which it is at least partially retracted relative to said ring; said system further comprising: an elastic element biasing the cap toward the deployed position; and a reversible locking device to lock the cap in the retracted position.