Our comfortable-to-wear T-shirts are the right choice to purchase for a casual day or party. Theory, a global designer label from the US was established in 1997, and it is headquartered in New York. You can shop Theory’s range of women’s and men’s clothing, footwear, and accessories through any of its 434 retail stores or via Amazon, Uniqlo, etc. Add sexiness to your look with many shades of Gray.