The 12-pack of MUVI Anti Mist Tabs from veho are designed to prevent your MUVI HD or K-Series Handsfree Camera from developing mist when using the waterproof case in cold or humid conditions. Before use, place two tabs down the sides of the waterproof case, ensuring that they do not interfere with the rubber seal on the housing. Once inside, the tabs will soak up any moisture and stop the lens from misting. The tabs can be reused 4-5 times by drying them in an oven at 300°F for 5 minutes between uses.