Men's four-corner underwear: also known as flat-bottomed pants, compared with the triangular briefs, the biggest characteristic is loose breathable. Made of cotton and other materials, the characteristics of the use of materials are more provincial, more daily wearers. Because it is more relaxed, it is suitable for work and leisure wear. However, some men are not accustomed to wearing them, because there is no sense of security and it is easy to walk.
Men's brief underwear: is the most common and original underwear design, more tight and conservative, suitable for sexual development wear, but the permeability is not enough corner underwear, so it is not suitable for sports wear.