This is an item of stationery (paper or writing goods), or other small merchandise such as good-luck charms, mascot straps, et cetera.
Keep prying eyes away from your cell phone screen with this handy item! This self-sticking screen measures 40mm by 73mm. A special printing process blocks viewing from a 45-degree angle; the silicone adhesive means you can remove and restick it repeatedly. It's cute and useful!