Shock absorber

A shock absorber comprising:

• a cylinder that is a cylindrical member;
• a slider being cylindrical-shaped, coaxially provided on an outer periphery of the cylinder, and configured to move in a direction along an axis of the cylinder;
• a first spring abutting against the slider, and urging the slider in a first direction that is one direction along the axis;
• a second spring abutting against the slider, and urging the slider in a direction opposite to the first direction;
• a sleeve being substantially cylindrical-shaped, and provided between the outer periphery of the cylinder and an inner periphery of the slider;
• a one side movement restriction portion being fixed to the cylinder, and abutting against one end of the sleeve to restrict a movement of the sleeve in the first direction;
• an other side movement restriction portion being located on the outer periphery of the cylinder, and abutting against an other end of the sleeve to restrict a movement of the sleeve in the direction opposite to the first direction;
• and
• a fixing member penetrating the sleeve in a radial direction to restrict a movement of the other side movement restriction portion with respect to the cylinder.