Semi-double size ● Easy to put in and take out! Full-open zipper ● With slits ● With 6 buttons to prevent the futon from slipping ■ Number of threads (approx.): 170 threads Surface fabric: 170 threads, Back fabric: 170 threads * "Number of threads" refers to the total number of "warp threads" and "weft threads" per inch (2.54cm). The higher the number, the finer the yarn is used, resulting in a softer and finer fabric. Fabrics with 250 or more threads are called high-density fabrics. ■ Machine washable ※ Although it is brand new and unopened, it will be opened and folded for shipping. Please be aware of this in advance.