When the outside environment is cold and the inside of the helmet is warm, condensation fog on the visor of the helmet. Pinlock is a produced to prevent this situation.
There are three different pinlock products.
The entry level Pinlock lens. No compromises on the core technology, just smaller in size and moisture absorbing capacity. This is the performance level needed for your city rides.
Two decades of fine tuning resulted in the perfect lens for daily commutes and weekend rides. Available in combination with MaxVision™ technology for stunning wide view.
From the racetrack to the road. Contains the same material components as used in MotoGP and Formula 1. Proven on the track it will keep you focused in even the toughest conditions.
If the helmet you buy does not come with a pinlock, you may have to buy it for an extra fee.
Suggestion: The filtering system on the helmet reviews page can help you find the helmet you want.