This is OLYMPUS genuine silica gel "SILCA-5S" for waterproof protectors. It's a desiccant that prevents fogging of lenses and the inside of the camera, making it ideal for underwater photography and use in humid environments. It is new, unused, and unopened. ・OLYMPUS genuine product ・5 bags (small size) ・Compatible with waterproof protectors ・New and unused ・Instant purchase welcome, anonymous shipping available Shipping will be via Yu-Yu Mercari mail, carefully packaged with waterproofing and cushioning materials. Please feel free to comment if you have any questions.