The high base curve style of typical ski sunglasses demands optically correct de-centred lenses for clear distortion free vision. These chemical treatments leave a water-repellent residue that helps reduce fogging on the inside and outside of the lens. For minimum glare, ski sunglasses with polarised lenses may be preferred.

• Ultraviolet protection is the first aspect you should be considering when choosing a ski goggle. The sun's UV radiation is stronger on high altitudes because more rays reach unobstructed on higher locations and snow reflects the rays making the intensity all the more potent. Smith goggles are a good example of winter optical wear that protects a person from high intensity ultra-violet radiation.

• Protection from snow and ice is important for all winter sportsmen. They high speeds at which they go downhill can reach as high as 70 and even 80 kilometers an hour. Ski goggles keep you safe and in fact are equipped with ventilation shafts which reduce the risk of impact with ice and snow to a minimum.

• Certain winter sports, like backcountry skiing is considered more dangerous because the tracks are lined with trees and vegetation. The ski goggle will help keep your face protected from the breaking twigs and pointed leaves as you race through the vegetation. The goggles are designed to dissipate air pressure and all that comes with the wind, thus provides excellent protection. The smith goggles are on of the best designed optical wear in the market and give great protection in these situations.

• A large population of the world lives in extreme weather areas. The two poles, Canada (Alberta in particular), Greenland, Alaska etc are all extremely cold and hot by blizzards every now and then. Keeping ski goggles at hand in their car can be very useful because they will provide excellent protection during sudden snow storms.

• The military when expediting in cold areas use ski goggles to trek and map the land and topography before setting up camps and in general use also.

Aforementioned are some instances when the use of ski goggles is especially advised.

Happy and safe skiing to all!

Sunglasses used for skiing and snow boarding should be durable so they don't break in the case of a fall or wipe-out. A headband attachment can be used so they don't fall off, even leisure skiers have the occasional tumble. Frames made from Grilamid TR90 are ideal because they are super-strong and designed to flex making them resistant to stress, cracking and fatigue. TR90 is an extremely lightweight and flexible material. It is virtually indestructible, has no risk of toxicity or allergy and is stable to UV exposure. Unlike sunglasses made from cheap materials that discolour from the sun's UV rays, these are made to last.

You might want to find more research on my site to do with Laboratory Goggles as well as Swimming Gogles.

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