The Matrx PSP (Posture Seat Polymer) cushion, coded E2607, includes a molded-in polymer layer for shear reduction and skin protection. Anatomically contoured HR foam has Ultra-Fresh anti-microbial and odor protection. Signature features include rear cushion radius and a waterfall front edge. The ultralightweight (2 lbs. and up) PSP has a reversible Startex outer cover and a zippered Startex inner cover.