Purchased in December 2025. I tried it out with a cover on and used it for one night with a bath towel wrapped around it. It has not been washed. Set includes pillow and cover. The pillow was purchased for 3,980 yen and the cover for 980 yen. Will be shipped in simple packaging. Features: Softer (feel) than conventional (general) memory foam pillows, the center has a pocket shape to cradle the head, supports well during side sleeping + prevents sinking + comes with height adjustment sheets (1cm x 2 sheets, left and right).