2" and 4" Inch High-Density Memory Foam Mattress Topper A Phenomenal High-Quality 2" and 4" Inch Multi Layered Memory Foam Mattress topper. This Swiss Ortho Sleep topper is Temperature Sensitive, Body Forming Super High-Density Mattress with The Best Slow Recovery High Density Foam for an Excellent Night's Sleep, The Slow Recovery Memory Foam Allows your Body To Rest Comfortably All Through The Night, Swiss Ortho Sleep Always Comes with a 10 Year Warranty, It is Delivered to you in an Easy and Convenient Compressed Packing.