A baby cage, initially named a "health cage", was essentially a bed encased in wire, dangling from the windows of city apartments. Mrs. Robert C Lafferty devised this concept to allow babies access to fresh air and sunlight despite living in densely populated cities. Baby cages witnessed a surge in popularity in London during the 1930s. These were designed specifically for children residing in cities without access to gardens. Local community groups, such as the Chelsea Baby Club, distributed these baby cages to members without gardens. However, the start of World War 2 and the subsequent Battle of Britain led by the Luftwaffe put an end to the use of baby cages throughout London. Despite this, they made a comeback in 1953. Eventually, by the mid-1900s, the demand for baby cages gradually dwindled, perhaps due to rising safety concerns and the increased traffic in urban settings.