The One swimming goggles feature special seals with arena Orbit-Proof Technology . They are designed to avoid areas around the eye socket that could interfere with the fit, thus ensuring a complete seal for any face shape. The wide, hard lenses provide panoramic and side vision. The split headband is easy to adjust on the sides and guarantees a stable and comfortable fit - even with long hair. The lenses have an anti-fog coating , UV 400 protection and are PVC-free . A protective bag for the goggles is also included.