Feature:1. The defogging film effectively absorbs the water vapor and mist generated in the waterproof case of the sports camera due to high air pressure or low temperature.2. The flat design does not take up space when put into the waterproof case of the sports camera, and does not affect the normal use of the sports camera.3. Simple operation, obvious effect, necessary sports camera shooting accessories for diving.4. This product is made of high quality cotton, very durable and very effective.5. The anti‑fog insert has adopted user friendly design, which makes it easy to operate.Specification:Item Type: Anti-fog IntertsColor: WhiteMaterial: CottonFeatures: Fog remove, humidity removeCompatibility: UniversalWeight: Approx. 10g/3.4oz.Package List:2 Bag of Anti-fog Inserts(12pcs)