Dynarex | DynaRest Deluxe Tri-Layer Foam MattressDynarex DynaRest Deluxe Tri Layer Foam Mattress for Pressure Redistribution, Comfort, and Support in Home and Healthcare Settings The Dynarex DynaRest Deluxe Tri Layer Foam Mattress, available from Alto Med Supply, is a high quality medical foam mattress designed to deliver exceptional comfort, support, and pressure redistribution. Engineered with three layers of variable density foam, this mattress helps reduce shear friction while promoting airflow,