Dimensions: 450*400mm Thickness: 4mm Heavy Textured Non-Woven Top Surface, Easy to glide and Easy to Stop. Non-slip Natural Rubber Base, Provides Heavy Grip Preventing Sliding From Your Desk. Anti-Fraying Micro Edge Stitching, Not Bother Your Wrist, Greatly Increases Lifespan The newly produced mouse pad may have a slight odor residue due to the sealed packaging, which is harmless to the human body. After unpacking, place the new mouse pad in a cool and ventilated place, and the odor will fade quickly.