BERT Eyeglasses by Kirk & Kirk. Material: Acrylic, Shape: Aviator, Color: Black, Blue, Bordeaux, Brown, Gray, Jade, Orange, Pink, Red, Violet, Yellow, Matte Black, Matte Crystal, Matte Vamp, Size: 53-17-143. Known for their comfort and durability, the BERT frames are perfect for individuals seeking timeless style with a contemporary twist. The Kirk & Kirk's BERT optical frames offer a sleek and sophisticated look with their round, classic design, meticulously crafted from lightweight acrylic. Available in an array of striking colors, these eyeglasses add a touch of elegance and modernity to any outfit.