Famed custom tailor Alan Flusser immortalized this Chelsea haberdashery in his ’96 book, “Style and the Man: How and Where to Buy Mens’ Clothes.” Need we say more? Always expect a well-edited selection of high-end sportswear and outerwear from Smedley, Etro, Paul Smith, and C.P. Company. The furnishings — glasses, ties, pocket squares, socks, cufflinks, etc. — are also topnotch.