The Spy Ace is our best selling goggle and it is no surprise to us at all! The Happy Lens is definitive lens for quality, clarity and durability. Fog is never an issue and the sleek profile allows for clear vision and eye catching style! Change the lens with little effort and gImmicks with the Quick Draw system and you get TWO high quality lenses in the box! The staff favourite for last year and most likely this year as well, grab a pair of Aces before they fly out the door!