A unique, compact, comprehensive and realistic model displaying the following pressure ulcers (per NPUAP 2016 - National Pressure Ulcer Advisory Panel): 

Stage 1 (in both darkly and lightly pigmented skin), Stage 2, Stage 3 with undermining, tunneling and slough, a shallow Stage 4 over the malleolus with exposed bone and tendon, and an unstageable eschar/slough wound.