Desire Top is a Bonnell spring mattress with double side pillow top, which gives you a blissfully peaceful sleep without burning a hole in your pocket.Encased with Thermobond felt in Polyester Jacquard, and a top layer of high density PU Foam, the Kurlon Desire Top mattress softens around the body and gives it the much needed extra support.The double side pillow top makes the Desire Top mattress usable on both the sides.