MARTINA Sunglasses by Kirk & Kirk. Material: Acrylic, Shape: Cateye, Color: Amber, Earth, Flame, Onyx, Size: 53-19-143. Crafted from the brand’s proprietary acrylic with the most audacious personalities in mind, the bold and beautiful Martina with a hint of cat-eye is extremely lightweight and comfortable to wear. The sharp offcut at the temples adds definition to your face, grabbing everyone’s attention.