Most plush mattresses have a solid inner core of coils. Plush and pillow top spring mattresses are similar; both typically have structural firmness and stability. They also have a soft outer fabric surface intended to make sleep more comfortable.
By this time, the sometimes complicated array of knots and styles of neckwear gave way to the neckties and bow ties, the latter a much smaller, more convenient version of the cravat. Another type of neckwear, the Ascot tie, was considered de rigueur for male guests at formal dinners and male spectators at races.
White-tie is the most formal look for men; it includes a formal tailcoat, a white vest, and a white tie. Black-tie is slightly less formal; men can simply wear a tuxedo, and should take the black tie part literally, wearing an actual black tie (and vest or cummerbund).