You're whole day on the mountain is dependent on seeing the mountain. Goggles are your eyeglass to the day. Light conditions, fit, ability to not fog up and of course style. These nail all of those and more. You can very easily change out the lens and buy extras. The strap is a nice length to wear with our without a helment. Get a loud color like blue and your friends will always be able to follow you down that chute or at the bottom of the lift line, whichever is your cup of tea. These goggles here are the standard size, not the IOX or I/OS.