Japanese-made kotatsu futon (Karen) single cover, 6-foot rectangular (90 x 180 cm) ▼A design that can be easily matched with both Japanese and Western-style rooms A deep blue that goes perfectly with tatami mats. It matches with chic interiors to create a calm impression. It has an elegant and stately feel, and will take the atmosphere of your usual Japanese-style room up a notch. The oriental color and pattern match well with Asian styles. Combine with dark colored flooring to create a more modern space.