Abstract: An assembly comprises a plurality of fluid impermeable sheets that cooperate with each other to form one or more fluid chambers. The one or more fluid chambers are in fluid communication with a fluid supply passages, and a vibration motor is associated with the one or more fluid chambers.

Abstract: This disclosure relates to systems including massage subassemblies for a seat, such as a seat of an automobile. The massage subassemblies are configured to provide a relatively intense massage. In an example, a system includes a first source of fluid, and a first bladder fluidly coupled to the first source of fluid and configured to be selectively inflated with the first source of fluid. The example system further includes a second source of fluid and a second bladder fluidly coupled to the second source of fluid and configured to be selectively inflated with the second source of fluid. Further, in the example, the second bladder projects from a surface of the first bladder, and the second bladder is fluidly isolated from the first bladder.