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. * We also sell duvet covers with the same pattern. If you would like both, please purchase them separately as combining them would increase shipping costs. In this case, we will discount each item by 100 yen, so please contact us beforehand.