The first line of D Squared eyeglasses was manufactured in 2009 by Marcolin, a manufacturer of sunglasses and eyeglasses. D Squared is a high-end fashion label founded by Dean and Dan Caten, identical twins born in Toronto, Canada. These fashion designers debuted a line of menswear in 1994 and launched their first women's collection in 2003. D Squared currently offers a full range of apparel, footwear, cosmetics and perfume.

D Squared glasses are classified into unisex glasses, D Squared eyeglasses for men and D Squared eyeglasses for women. Each of these categories includes sunglasses that have lenses and frames that are designed to be fitted with prescription lenses. D Squared eyeglasses for men generally have square frames, while D Squared eyeglasses for women typically have round frames.

D Squared eyewear for men typically has frames made of acetate. The frames are usually Havana Black or Burgundy with Rose or Gold inserts. The bridge is 16 millimeters wide and the lenses are 62 millimeters wide. The length of the earpieces is 125 millimeters.

D Squared eyeglass frames for women are typically available in Black Turquoise Blue, Brown Yellow Black, Violet Black and Purple Bordeaux. The frames are typically metal with earpieces made of acetate. The measurements for women's D Squared eyeglasses are the same as those for men.