【Speedy Shipping】HOT】 Uses Heat-Generating Cotton + LockHeat Rapid Heat Generation Fiber 【SUPER】 Water-Repellent Finish, Pocket Included, 1.5kg Filling, Fit Quilt, Kotatsu Futon Single Item 185x185cm, Reversible, Usable on Both Sides, Square, Flannel, 24-Hour Continuous Antibacterial & Deodorizing, Kotatsu Futon, 保 (This last character is likely part of a longer word, possibly "保" for "保" or "保管" meaning "storage" or "preservation", but without more context, it's difficult to say for sure.) ‐ Mercari: Shop from Japan