Mattress size is a key consideration when purchasing a new mattress. It refers to the physical size of the mattress, in terms of length, width, and thickness. The standard size of a mattress can vary depending on geographic region, but common sizes include:

• Single bed: 90 cm x 190 cm
• Double bed: 140 cm x 190 cm
• Large double bed: 160 cm x 200 cm
• Extra large double bed: 180 cm x 200 cm

Mattresses can also be available in larger or smaller sizes to meet specific consumer needs. For example, children's mattresses may be smaller than adult mattresses.

Mattress size is important for several reasons. First, a mattress that is too small for the bed frame can shift and slide, which can be uncomfortable and potentially dangerous for the sleeper. Second, a mattress that is too large may not fit in the bed frame, which can lead to instability and discomfort.

Mattress size can impact sleeper comfort. A mattress that is too short can cause pain in the legs and feet, while a mattress that is too narrow can make it difficult to find a comfortable sleeping position. It is therefore important to choose the mattress size that best suits your needs and those of your bedroom.

Ultimately, choosing a mattress size depends on personal factors such as body type, sleep preferences, and bedroom size. It's important to take the time to find the right balance between comfort and practicality for optimal sleep.