The blue belt for BJJ is made of 100% cotton. The color of the belt reflects the level of your advancement. You get the blue belt to BJJ after about 2-3 years from the moment you start BJJ training. Fortunately, its production took us a little less time. On the one hand, we sewed a stylish jacquard label with our logo, on the other hand, a black panel for beams. All this is swn with solid/strong threads with attention to detail.