The Smith Squad XL is the big brother to the Squad, hence the Xl. So why go bigger? The bigger lens allows you to have better vision peripherally, so hopefully you see that person coming up on your side before you crash into each other. Additionally, the goggle does come with two lenses, one for bright conditions and one for low light situations like overcast or night riding. The Squad XL is good looking, big frame goggle that won't break your bank.