Frame constructions have been rigorously tested to simulate the home and transportation environments for improved durability. Corners are glued, blocked and stapled. Seats and back spring rails are cut from 7/8" hardwood. Stripes and patterns are match cut. All fabrics are pre-approved for wearability and durability against AHFA standards. Cushion cores are constructed of low melt fiber wrapped over high quality foam. Sleeper features easy to lift mechanism memory foam mattress.