Single Size ● For futons and mattresses ● Elasticated back ■ Compatible futon size: 100cm wide x 210cm long ■ Compatible mattress size: up to 100cm wide x 200cm long x 38cm depth ■ Thread count (approx.): 100 Surface fabric: 100 threads * "Thread count" refers to the total number of "warp" and "weft" threads per inch (2.54cm). The higher the number, the finer the yarn used, resulting in a softer and finer fabric. Fabrics with a thread count of 250 or more are considered high-density fabrics. ■ Machine washable * Although this product is new, unused, and unopened, it will be opened and folded for shipping. Please be aware of this beforehand.