Color: Gray Material: Flannel Size: Double - 140X200 Pattern: Solid Product Dimensions: Length 200 x Width 1.4 [Contact Warmth & Soft Touch] This warm box sheet is recommended for the winter season when it becomes difficult to sleep due to the cold. The outer fabric uses soft flannel fabric (premium microfiber), and you can feel a soft touch the moment it touches your skin, making it comfortable to use in the fall and winter. The layer of air repels the cold air from the outside, and also takes in warm air into the gaps of the fibers, wrapping the heat coming from the body, so it does not let the warmth escape. I accidentally purchased the wrong size. It has been opened, but not used. I will fold it up small and send it.