Motorcycle sunglasses, and prescription motorcycle sunglasses, are designed to block wind blowing into your eyes, and to protect your eyes, while allowing for air flow so the lenses do not fog. They should also have eye cups to prevent any wind from coming in the sides. It does not matter if you need sunglasses for motorcycling, bicycling, or any other kind of cycling. This is a very tricky balance, and comfort varies from rider to rider. We have looked high and low and found the best available solution for motorcycling sunglasses, and we also have found some models sunglasses that our customers have raved about. These models are also able to accomodate prescription lenses.