The X2s is our new top of the line goggle, that takes the best features from our goggle styles and combines them to create the next level of evolution in the Advanced Projects X category. Slightly smaller than the X2 goggle to give it a more universal fit, we expanded the peripheral vision on the X2s giving it a wider range of sight. The X2s comes with our patented Swiftlock lens change technology that has a easy on-and-off mechanism which provides the most secure and quickest way to change lenses.