The Aqua Sphere Vista Pro Swim Mask features a super-comfortable silicone skirt that fits snugly to your face to ensure a leak-free fit. The easy to operate, quick-fit push-button buckle system makes tightening and loosening quick and simple, and now paired with a pivoting buckle that adjusts and rotates to the shape of the head for comfort and fit. The Aqua Sphere Vista Pro Swim Mask offers advanced UV protection and optimized visibility during those late morning swim workouts or competition start times when there are few clouds or in sunny conditions.