A chair-and-a-half sleeper is a large armchair that also contains a small, folding mattress. These pieces of furniture function exactly like traditional sleeper sofas but are much smaller. Chair-and-a-half sleepers are smaller than love seats but larger than regular armchairs.
The name chair-and-a-half derives from the fact that these pieces of furniture are about one and one-half times as wide as a regular armchair. During normal use, a chair-and-a-half sleeper looks and functions like any other large armchair. However, if a host requires additional sleeping space for guests or others, a small mattress and frame unfold from underneath the chair's lower cushion. Like a full-sized sleeper sofa, a chair-and-a-half sleeper provides additional sleeping space while taking up no more room in the home than any other large armchair.
Chair-and-a-half sleepers are distinct from chair beds, folding sleeper chairs and chair futons. All of these types of furniture use folding frames or cushions to provide temporary sleeping space. While these types of furniture are less expensive than chair-and-a-half sleepers, they only feature cushions or mats, while chair-and-a-half sleepers provide more comfortable and supportive innerspring mattresses with metal bed frames.
Unlike traditional sleeper sofas, which have folding mattresses large enough to accommodate multiple people, chair-and-a-half sleepers are only large enough for individuals.