These glasses are part of the Kittles x Zenni collection. Thunderbirds is an homage to 49er George Kittle's family's yoga and mindfulness program for athletes. The thin glossy acetate frame is clear with contrasting inner rims. The lightweight style is both sturday and flexible with gold temple arms and tortoiseshell acetate temple tips for ultimate comfort. The look is available in red with gold accents tortoiseshell and gold. | Zenni Square Prescription Glasses Red Tortoiseshell Full Rim Frame