A device for providing anatomical support during operative or therapeutic procedures comprising a configurable bolster formed from a block of resilient synthetic foam material and having a plurality of recessed regions formed in the top surface of the bolster and extending into selected portions of the bolster for accommodating particular anatomical structures. Precut slits are provided extending vertically upward from the bottom surface of the bolster to enable removal of material from the bolster to adapt it to particular circumstances of use.