A restricted passage (24) of the present invention includes a first communication part (26) which is open to a first liquid chamber, a second communication part (27) which is open to a second liquid chamber, and a main body flow path (25) which allows the first communication part (26) and the second communication part (27) to communicate with each other, the main body flow path (25) includes a swirl chamber (34) that generates a swirling flow of the liquid according to a flow velocity of the liquid from the other of the first communication part (26) and the second communication part (27), and the swirl chamber (34) is disposed to be spaced apart from one of the first ID communication part (26) and the second communication part (27).