Hbaid 8 Inch, memory foam mattress and hybrid mattress. Enter your deepest sleep with the Hbaid 8-inch gel memory foam hybrid mattress. This cutting-edge mattress uses two technologies- pressure-relieving memory foam and supportive steel springs- that work together to create a mattress that offers excellent sleep comfort. Start with memory foam quilted into the cover, add a curve-hugging foam layer and layer it on durable springs that offer the bounce of a traditional mattress, and you've got a hybrid approach to support that offers the best of both worlds. The Hbaid 8-inch gel memory foam hybrid twin mattress is rolled and shipped in a box for convenience.