Sateen, not to be confused with satin[1][2], is a type of fabric often found in bed sheets.
Sateen is usually applied to cotton, or sometimes rayon. Better qualities are mercerized to give a higher sheen. Some are only calendered to produce the sheen but this disappears with washing and is not considered genuine sateen. Sateen may be bleached, dyed, or printed. It is difficult to make good bound buttonholes on it as it has a tendency to slip at the seams.
Sateen produces the sheen and softer feel through the use of a different structure in the weaving process. The sateen structure is four over, one under, placing the most threads on the surface, making it extremely soft, though slightly less durable than other weaves. Standard non-sateen weaves use a one-over, one-under structure. Satin also uses this structure; however, materials such as silk, polyester, etc., are used instead of cotton. Sateen was also used for Vintage dress shirts and other Vintage type clothes.