I am using sleepwell mattress from more than two years. It is very good product to comfort sleeping. The foam wall technology incorported in the mattress ensure. Its edges are smooth, comfortable and supportive. Sleepwell serenity is a pillow top mattress that is made of viscoelastic temperature sensitive material and soft flexi PU foam for enhance apperance and comfort. The length of mattress is 6 feet and width is 5 feet which provide you much space for sleeping.