Does the subject want to ask, "What is the blue rectangular sign in front of the gray short sleeve?" Blue rectangle sign. The red and blue rectangular logo on the front of gray short sleeves is tommy hilfiger, including casual sportswear and accessories for men and women, which embodies the style of "American classic cool" and is the logo of short sleeves. Logo is the English expression of logo or trademark, which plays a role in identifying and promoting companies with logo. Through image identification, consumers can remember the main body and brand culture of the company.