Duke is a rectangular sunglass that can be worn by both men and women. Classic Square Frame Sunglasses For Summer, Classic Gray Sunglasses With Mirrored Lenses, Classic Rectangular Sunglasses For Summer, Casual Square Sunglasses For Everyday, Classic Gray Sunglasses With Tinted Lenses, Classic Gray Tinted Sunglasses, Everyday Shield Sunglasses With Tinted Square Frame, Casual Square Sunglasses With Polarized Lenses, Everyday Square Frame Shield Sunglasses With Tinted Lenses