5-zone 8” pocket coil with firmer centre support resists motion transfer ,3" High density foam encasement for firm edge suppoet.8 1/2 oz. bumper pad,8 1/2 oz. insulator pad, 3/4" high density soy foam topper Euro Top to 2" 1.8LB Soy foam with 1" 4LB Gel infused memory foam.. The quilting is to 3/8" + 1-1/4 " Soy based convoluted foam and 10 oz. DuPont hollo-fil. The bottom of the mattress is upholstered with a non-skid Grip-top to stop the mattress from sliding. Triple sewed handles for easy rotation. The top of the box spring is also upholstered with the non-skip Grip-top fabric to prevent the mattress from sliding. The standard 8” steel High performance semi flex box spring is available in low profile 5” or High Profile 10” at no extra cost.