Introducing OP‑351U: Urban restraint meets soft structure (OP‑351U by O&X New York: The Fashion‑Forward Soft Square Eyewear Trend for 2026) The OP‑351U isn’t about flash – it’s about balance and restraint. O&X describes the frame as introducing “structure through softness”; its balanced square front with gentle curvature creates a silhouette that feels modern yet approachable.