Seat and back cushions are fully upholstered. Double needled topstitching on leather upholstery and on thin solid textiles. Single needled topstitching on heavily ribbed fabrics and multicolor prints. No sag spring deck covered in black cotton textileCushions are foam core with polyester fiber wrap for a tight and tailored aestheticFrame is constructed in sections with a combination plywood/hardwood seat and backAdjustable nylon glides includedPfister Sofa is certified Clean Air GOLD