Foamma's Certified High Resilience foam, or HR foam, is open-cell, flexible polyurethane foam that has a less uniform (more random) cell structure that helps add support, comfort, and resilience or bounce. HR foams have a high support factor and greater surface resilience than Viscoelastic foams. HR foam has a very fast recovery and bounces back to its original shape immediately after compression. FLAME RETARDENT 2.8 POUND FOAM IS OUR TOP OF THE LINE FOAM. FOR YOUR SPECIAL CUSTOMERS WHO DEMAND THE BEST. HR-70 IS EXTRA FIRM FOR SEATS. We do not cut corners and only use Premium Quality which are sold in high end furnitutre stores to reduce pressure points is one of the reasons so many people are using it to get comfortable seat. Now you can enjoy the benefits of new foam cushion without having to buy new furniture, by adding this Extra high density foam seat cushion the foam is also specially formulated Extra Firm Seats. Common applications include Standard size seats, chairs, cushions church pews & Restaurant seating. Typical life is 7 to 10 years. Return Policy: We do not return fees. Your item must be unused and in the same condition that you received it in. Once your item has been returned to our returns department, there is 50% restocking fee for all items returned.