This piece of upholstery is made by Smith Brothers of Berne.  It is among the highest quality money can buy.  Most upholstery has a single spring set running the length of the piece, but Smith Brothers uses a drop-in spring for each individual seat, keeping you from being affected by the people sitting next to you.  They also use coil springs and Qualux® Ultra foam, allowing your upholstery to retain the way it sits for a lifetime.  Smith Brothers offers a lifetime warranty on all frames, springs, and foam for every piece of upholstery they sell.