Depending upon your requirements, you can choose between a mattress topper or a memory foam. If you are looking for a soft yet firm surface, the mattress topper is a smart choice. However, to add extra comfort and cushioning, you can opt for memory foam. These are great in terms of motion isolation, pressure relief, and durability. It is essential to keep a check on the softness and durability of the mattress so that it doesn’t harm your back while sleeping. Your choice may also depend on the budget, which may go a little higher if you choose memory foam. Analyze the pros and cons of both and make an informed decision. Ergo21 has the perfect design. Ergo21 Mattress Overlay uses soft foam  topped by 4 rows of LiquiCell Membranes to reduce pressure sores and help with Arthritis, hip, back and shoulder pain. LiquiCell maintains proper blood flow at the point of contact between the body and the surface. Check out the Ergo21 Seat Cushions using the same blood perfusion LiquiCell Technology.