Get yourself a brand new suit or blazer from top-class online stores like Amazon, Walmart, GAP at affordable prices. Theory was co-founded by Andrew Rosen and Elie Tahari with a vision to manufacture thoughtfully designed luxurious clothing for men and women. Theory brings you an assorted range of men’s and women’s pants, jackets, jumpsuits, dresses, blazers, shirts, jeans, bags, gloves, etc. The name tan is derived from oak bark used in the tanning of leather.