Muc off anti fog treatment 35mlmuc off anti fog treatment uses cutting edge moisture absorption technology with an anti mist formula to create a transparent micro thin coating so your ride is never cut short by foggy gogglesour anti fog treatment lasts up to five days and if you spray on the outside of your swim goggles or sports glasses the anti mist formula will help rain bead off to make your ride that much saferand with the muc off long lasting formula youre goggles will be fog fr