The spring is a 510 Bonnel coil with 6 turns for a 7” high profile using a 14 1/2 gauge wire. The 6 ½” gauge border wire and, 24 double edge guard all around the edge of the spring give extra end and side support. A full 8 oz insulator pad used throughout the entire mattress, then a 3/4" high density soy based foam topper. The Aloe Vera fabrics is quilted to 3/8 foam and 20 oz poly. 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.