Seat assembly, cushion, and tool and method of forming

A system, comprising:

• a first tool comprising a first forming surface defining a series of first apertures therethrough;
• a second tool comprising a second forming surface defining a series of second apertures therethrough, the first forming surface and the second forming surface cooperating to define a cavity and shaped to form a cushion member;
• one or more inlet manifolds;
• a fluid system comprising a fluid transfer device, a valve, and a heater in fluid communication with the one or more inlet manifolds;
• and
• a controller configured to control the valve to selectively fluidly couple the heater to the one or more inlet manifolds to provide fluid to the cavity at a first temperature, and selectively fluidly decouple the one or more inlet manifolds from the heater to provide fluid to the cavity at a second temperature less than the first temperature, wherein the one or more inlet manifolds extends along an outer perimeter wall of a chamber comprising the first tool and the second tool, and wherein the chamber comprises at least one inlet in a fluid communication with the inlet manifold, and wherein the at least one inlet comprises a deflector that is positioned to extend into the inlet manifold at a fixed angle relative to the inlet, such that the deflector is adapted to direct fluid into the chamber.