The Descente logo on the left is fake. The ones with Descente's logo on the left are fakes, while the authentic ones are on the right arm. Looking at the official website information, we can see that the models wearing the brand's clothes have the logo on the right arm. The brand was founded in 1935. The brand has used technology that reflects sunlight to develop fabrics with super thermal insulation effects. By increasing the reflectivity of infrared rays from heat sources, it can suppress the temperature rise in clothes. We have also developed fabrics with deodorizing functions suitable for sports, which can quickly and completely eliminate sweat odor caused by sweating a lot during exercise in a short period of time.