The Full Size Posture Care Mattress Set provides great support through the night and works to isolate motion transfer. Featuring 299 Top Quality 13.5 Gauge Bonnell Coils with a tight top, the Full Size Posture Care Mattress Set is value driven and quality focused. Bonnell coil mattresses have hourglass-shaped coils, which are attached to surrounding coils with a small wire spiral called a helical. They are the oldest, most commonly used coil system to date. The Foundation is made of 7" Canadian Wood. 3X Single Size (54" wide x 75" length) 1 X Queens Size (60" wide x 80" length) Lightly used (4 months)