This is a clear blue cover for the Quad Cortex, made of 2mm thick acrylic. Due to the transparent material, the LED lights of the footswitches are visible even when the cover is attached. A cleaning cloth and transparent double-sided tape that leaves no residue are included. A colorless, transparent lid and hinge set is also available for an additional 500 yen. Please comment before purchasing to change the price. [Inspection and Replacement] We generally ship the product with the protective film attached, but occasionally, issues such as laser-induced hazing that are not visible through the film may occur. In the unlikely event that a defect is found after removing the film, we will exchange the product as an initial defect. Please contact us before giving a review.