WoCase GoPro Water Sport Accessories: Floating Hand Grip/Dive Scuba Filter Set (5 pcs) for HERO6 5 4 HERO3+ / Extra Strong Anti Fog Inserts/Deluxe Bundle for All GoPro Hero Cameras Includes 24 pcs/pack extra strong anti-fog inserts, humidity indicator and portable zipper bag. Drop inserts into sides of camera housing to prevent fogging in cold and humid environments. 100% Reusable.To dry out and reuse, heat inserts on a pan in oven at 300 F for 5 minutes. Extra stronger industrial 3M adhesive material. Extra strong absorbing capacity guaranteed. Low price and best quality comparable to GoPro?. 30 day hassle free money back guarantee. One year limited warranty.