Anti-Fog Coating: These lens have an Anti-Fog coating on them to, well of course to help prevent the goggles from fogging as to not ruin your day of skiing.
Vented Lens: There are vents cut into the lenses on top of the goggle to allow warm air to escape and further keep your goggles from fogging.
Helmet compatible: The strap is longer to fit around helmets, as well as hats, without stretching it to the max. Helmet compatible goggles also try to place the adjustment clips off center to not interfere with goggle clips that are on the back of most helmets. The shape of the frame also sits well with most brands of helmets.
Goggle bag: A soft cloth bag is included with these goggles to protect them from damage while traveling. The bags double as lens cleaners, but use very little pressure and its always a good idea to test in the corner of the lens before you figure out that the cloth is dirty and it just scratched up your nice goggles.
Super Fit Engineering: Super Fit Engineering is the foundation of Giro's design process. Every new Giro product is designed with reference to their database of anatomic measurements and rider input. They then test the design repeatedly in the lab and in the hands of riders so they can gather feedback and make refinements to create a final product that fits and performs at the highest level.