Maui Jim Castles - Used - Great Condition - Polarized Sunglasses. Unisex. Worn a dozen times, decided I prefer plastic frames to metal. Great condition. No scratches, no marks. Ships with case and cloth cleaner. This refined aviator style features classic design constructed from monel metal and nickel silver with SuperThin Glass lenses. The Castles bring a style that look great as both men's and women's aviator sunglasses and are a great choice for consumers demanding a durable, comfortable, high-performing frame.