The Simmons Deep Sleep Series 4 is the highest level of a series of mattresses designed to be both comfortable and affordable. No longer made and sold in the United States, it is still available in Canada, made there by Simmons Canada, Inc., as are the BackCare and Beautyrest NXG collections according to the Simmons Canada website.
The four styles of Simmons DeepSleep mattresses are numbered 1 through 4, with 4 having more foam, the
top layer being Visco elastic memory foam, bringing the height of the Deep Sleep Series 4 to 16 inches. The Simmons Deep Sleep 4 mattress is covered with SuperSoft Knit and Damask fabrics, designed to be soft and comfortable. The SuperSoft Knit is resilient, and the Damask is lightweight.
The Deep Sleep Series by Simmons features the 416 Extra Tall Coil Unit, with coils taller than in other Simmons mattresses. These are not pocketed as are those in the Beautyrest line, but the coils are heavy gauge and they do work at weight distribution to relieve pressure points. SimFlex interactive open coils firm up when compressed and are fastened together at the top and bottom to form a resilient, interactive support system.
In addition to the SimFlex® Continuous Interactive Coil Technology, the Visco memory foam and the
covering of SuperSoft Knit and Damask Fabric, the Simmons Deep Sleep Series 4 features Surround
Around edge support to maintain the shape ot the mattress. The whole package is engineered to not require periodic flipping of the mattress.
The Simmons Deep Sleep Series 4 mattresses come with the PowerFirm® foundation, as do the other Deep
Sleep mattresses. Simmons says the PowerFirm® foundation is strong and resilient, offering remarkable support. All this, and yet at a very affordable price.
According to the Simmons Canada site, the four levels of Simmons DeepSleep Series mattresses are now called the DeepSleep® Tight Top, Pillow Top, Hi-Loft Pillow Top, and Comfort Top, with Simmons Deep
Sleep Series 4 being the Comfort Top.