Anti-Fog Inserts are made for GoPro cameras and fit perfectly inside the Waterproof Housing Case to prevent your videos from being ruined by the mist & fog that occurs when filming in mist temperature/humid environments. Product Features: 1) 100% Brand New 2) Prevent fogging in cold and humid environments 3) Insert at both sides of protective housing, protects camera lens from fog 4) Reusable, can be reused up to 4 times 5) Heat the inserts on a pan in an oven at 300° for 5 minutes and store in an airtight bag after drying. 6) Quantity: 12pcs / 36pcs 7) Color: White 8) Material: High molecular polymer 9) Compatible with ALL GoPro Hero Action Cameras 10) Suitable for diving, climbing, surfing and aerial photographing Anti-Fog Inserts ONLY, the GoPro Camera, Housing Case and ScrewNOTincluded