For GoPro 13 Black, the dedicated lens cover is made of silicone material and can be molded on a real machine with suitable tightness. For GoPro 13 dedicated lens cover, a rope hole is reserved in the upper right corner. Size: 3.5 * 3.5 * 0.7cm. Color: Black. Material: Silicone. Packing list: only Lens protective cover. Attention: The product does not come with a machine or rope.