Computer Cut Wood Parts with extra glue and stapling guarantee a long-lasting framework Steel Springs of 12-gauge heat tempered steel in the back and heavier 8-gauge steel in the seat provide strength, comfort and flexibility. Note: Back springs not applicable to every design Exclusive Steel Tech Framing steel rail and stretcher system offer the strongest foundation for long-term strength, stability and seating comfort Blown Fiber Backs are softer, offering less resistance and more comfort Comfor-Gel 100% Gel-Infused Memory Foam Insert delivers superior comfort with a cooler seating experience and reduced motion transfer Comfort Coil Seat Cushions offer ultimate comfort and durability Edges Smoothed with foam and fiber padding Reinforced Arm Parts strengthen the frame construction with secured wood slats Computer Cut Wood Parts with extra glue and stapling guarantee a long-lasting framework Steel Springs of 12-gauge heat tempered steel in the back and heavier 8-gauge steel in the seat provide strength, comfort and flexibility. Note: Back springs not applicable to every design Exclusive Steel Tech Framing steel rail and stretcher system offer the strongest foundation for long-term strength, stability and seating comfort Blown Fiber Backs are softer, offering less resistance and more comfort Comfor-Gel 100% Gel-Infused Memory Foam Insert delivers superior comfort with a cooler seating experience and reduced motion transfer Comfort Coil Seat Cushions offer ultimate comfort and durability Edges Smoothed with foam and fiber padding Reinforced Arm Parts strengthen the frame construction with secured wood slats