A method and structure for furnishing pressure-evenized, dynamic-reaction anatomical support. The method includes (a) supporting the 
anatomy with a 100% 
open cell viscoelastic foam, and (b) within the foam, reacting to both static and dynamic, anatomically-produced foam indentations to expand and contract 
cell-openness size, whereby deeper / sharper indentations result in greater-size 
cell-openness. Such reacting includes laterally stretching and flowing regions of the foam adjacent such an indentation The 
overlay structure features (1) a dynamic-response core expanse formed of a 100% open-
cell, compressible and flowable, 
polyurethane, viscoelastic foam possessing a compressed, relaxed-state volume, and (2) an elastomeric, 
moisture- and gas-flow-managing 
coating, load-transmissively, bonded to the entirety of the core expanse's outside surface to function as a dynamically-responsive unit with the expanse. The 
coating possesses a relaxed-state, prestressed tension condition which is responsible for the expanse's compressed condition.