There are a few words and phrases that sum up the Preston upholstery maker Tetrad: exceptional, eccentric and British.  They aren't considering churning out sofas and chairs, but are usually experimenting with some thing distinctive, but, Now and again, they come up with a blinding winner: their Harris Tweed collection. https://tetrad-sofas67890.thekatyblog.com/35233013/not-known-factual-statements-about-tetrad-sofas