A piston that moves reciprocally in the cylinder of an internal combustion engine and has a piston skirt that makes sliding contact with the inner wall of the cylinder. Solid lubrication parts are provided on the sliding-contact surface of the piston skirt. The solid lubrication parts include at least one type of silver, silver alloy, copper, or copper alloy, and at least one type of carbon material or carbide ceramics.

Swash plate 3, which is a sliding member, includes base material 31, and coating layer 31 that is formed on base material 31 and has a thickness of 10 m or more. Coating layer 31 includes binder resin 321 and solid lubricant 322, which is dispersed in binder resin 321 and has a c-axis orientation, and a relative c-axis intensity ratio of solid lubricant 321 in coating layer 32 is 80% or more.