Derek Cardigan 7005 Black eyeglasses have a va-va-voom kind of style. This classic cat-eye style is pumped up and made bigger in glossy black acetate. To help show off your geek pride, the division and multiplication symbols are featured on the sides with the equal sign on the arms. For added comfort, the arms are attached with spring hinges. This style is also perfect for sunglasses, just add a tint!