Handmade Customized Ninja Uniforms, Martial Arts. Real Ninja Uniform - 14oz Authentic Ninja Costume + Free Black Belt. Ninja Costume Unisex Traditional Chinese Tang Suit Kung Fu Uniform Masked Samura Warrior Fancy Dress. Ninja uniform is made of 100% cotton for optimum stealth and comfort. The uniform comes complete with traditional pants, jacket, hand and forearm covers with finger loops, and identity concealing hood/mask combo. The pants include double waist ties in addition to knee and ankle ties.