RADAR XL STRAIGHT BLADES is a specially designed edition of the coveted RADAR performance eyewear. With an extra 7mm between the nose bridge and the top of the frame, this XL version extends your range of view, and the straight stems are engineered to fit comfortably under most helmets. The expanded field of vision is a performance advantage for everything from MTB to baseball, and it was originally invented to solve the problem of restricted view in the head-down position when triathletes are digging deep in the Pain locker to bust their own limits.