Erwin Müller Comfort Seat Cushion Foam. It supports an upright sitting posture, raises the seating surface by about 10 cm, and makes it easier to stand up. The foam consists of 6 cm of PUR foam and 4 cm of memory foam. The PUR base layer provides a stable seating foundation, while the memory foam layer adapts to body heat and weight, ensuring perfect pressure relief. After use, the cushion returns to its original shape. Removable cover made of smooth cotton fabric. Core made of polyurethane foam.