You can find 3 terms that sum up the Preston upholstery maker Tetrad: exclusive, eccentric and British. They're not serious about churning out sofas and chairs, but are always experimenting with a thing different, but, every now and then, they come up with a blinding winner: their Harris Tweed collection. https://supremo-garden-furniture45667.bloggerswise.com/44590043/tetrad-sofas-for-dummies