What makes our tri-fold sofa bed so different? The convertible folding mattress can be changed freely among sofa, chaise and bed to satisfy your different needs. High density sponge filling and selected flocked cloth cover are the key to your maximum comfort & relaxation. The convertible sofa bed perfectly fits the curves of the body, and even if you sit or lie on it for a long time, you won't feel tired. More, the outer cover with smooth zipper can be quickly removed for easy washing. It’s great for apartments, dormitory, home offices, an RV or anywhere else space is limited.