Mattress
Beds became simpler in the 19th century, with four-posters falling out of style. Mattresses were transformed when coil springs were introduced in the 1870s, and metal frames became more common. At the beginning of the 20th century, beds and mattresses could be mass produced for the first time, making them more accessible. As more companies began making mattresses, buying a mattress became much more about comfort and preference, which remains the case today.