Lumex Lightest Gel Overlay #104280 - 80" x 42" x 4"A new standard in pressure management. Extremely lightweight for easy handling and lower shipping cost. Mattress overlay incorporates a solid gel patterned layer that is inherently visco elastic, and works to responding to pressure by deforming slightly to disperse critical weight over a large surface area. Non migrating gel is engineered into a high density 2" solid foam base with specially designed 1" convoluted top to provide maximum comfort and