Julbo Reflex Performance Sunglasses (Black, 4 Lens Set) Interchangeable X4: Spectron 4, Spectron 3, Hi Contrast and Clear Wrap Around Coverage: Curved frame with wide temples to protect against harsh sunlight. Total-wrap geometry lenses for an extra-wide field of vision Grip Tech: Inserts at stem ends for comfort and hold, does not stick to hair Curved temples: Ergonomic profile to wear sunglasses on face or head