Lightweight Karate Gi Delivers Unmatched Freedom of Movement. Sport a lightweight and traditional karate gi constructed with 100% 8oz. Cotton/Polyester blend for enhanced strength, breathability and optimized comfort. Plus, it's lightweight design provides a unique freedom of movement perfect for karate practitioners of all levels. Sacrifice nothing with the new Karate Gi by Hayabusa - the world's #1 trusted combat equipment and apparel brand. A Honoring Tradition. The entire Hayabusa Karate collection is branded with the traditional Japanese word musha, which is composed of the kanji meaning Warrior; Military Person. So, musha implies warrior in the Bushido tradition and flawlessly embodies the spirit of Hayabusa Karate.