This snorkel mask is renowned for being one of the finest anti-fog options, equipped with safety-reinforced lenses specifically designed to resist fogging. The lenses are coated with a ploy-carbon layer, ensuring effective fog-resistance. Source : https://watersnorkeling.com/top-best-anti-fog-snorkel-mask/
3 ply surgical mask is effective enough.
Just normal surgical mask
Normal surgical masks.
3-ply surgical masks
N95