A flat sheet is an essential piece of bedding, designed to provide an extra layer of protection between the sleeper and the duvet, blanket or mattress. It is a large rectangular piece of fabric, usually made from materials such as cotton, linen, cotton sateen, percale or polyester, that is used to cover the mattress or to envelop the body during sleep.

The main function of a flat sheet is to protect and increase the life of the bedding, by creating a barrier between the sleeper and other elements of the bedding, such as the mattress, duvet or blanket. This extra layer of protection helps maintain the cleanliness and hygiene of the bed, preventing the accumulation of sweat, body oils, dead skin and other particles that can penetrate the fibers of the other elements of the bedding. It therefore has several advantages:

Protection: As mentioned earlier, a flat sheet provides additional protection for other bedding items, keeping them safe from dirt, stains and wear, thus extending their lifespan.

Comfort: A flat sheet can add an extra layer of comfort by providing a soft, smooth surface for the sleeper to rest on. Flat sheets are typically made from breathable, comfortable materials, such as cotton, linen, or cotton sateen, which feel great to the touch and help regulate temperature while sleeping.

Aesthetics: Flat sheets come in a wide range of colors, patterns, and textures, allowing you to create a personalized ambiance and style for your bedroom. They can be matched or coordinated with other bedding items, such as pillowcases, duvet covers, and blankets, to create a cohesive and attractive bedding set.

Ease of care: Flat sheets are easy to wash and maintain, helping to maintain a clean and hygienic sleeping environment. They can be machine washed regularly, according to the manufacturer's instructions, and are generally easier to wash and dry than duvets, blankets or mattresses.The feel of a mattress is the sensation you get when lying on it. It is therefore the first impression you get when lying on a mattress. This feeling is usually determined by the top layer of the mattress, also called the comfort layer.