The Aim Beyond HD Ultra Vision goggles developed by Bomber are high performance visual enhancing goggles, featuring a frameless design for optimal peripheral vision, and magnetic photochromic lens technology that will enhance your vision no matter the conditions. Each pair comes with two anti-fog, anti-scratch photochromic lenses that attach magnetically to the frame, (midnight blue lens for sunny and sun/cloud conditions, and an interchangeable yellow lens for low light conditions such as thick fog or for overcast days). The goggles will give you UV protection and the flexibility you need to enjoy every ski season to the fullest.