1. use, make that the camera's lens is clean and dry. Always install the Lens in a clean and dry environment. Any particles on the lens or Lens may affect the results.2. If you remove the Lens from the camera, apply a new double-sided adhesive re-installing the Lens .3. The Lens Guards are only splash-proof and are not designed for underwater . If used underwater, the Lens 's inner side may fog up and the double-sided adhesive may lose stickiness. also remove the Lens Guards using the Dive Case.4. not to scratch the camera lenses and screen as you remove the Lens Guards.Material: plasticcolour: black + transparentPackage Contents:2 x Sticky Lens GuardsOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.