HAYABUSA Foot Grips: A great product that protects your feet and maintains your ankle. It keeps your feet firmly on the ground during intense training. Excellent anti-slip guaranteed, improved starting, and no more burns ... An amazing product!!! Characteristics: Black Neoprene fabric. Designed with Revolutionary SureGripTM Technology. Maximize footwork, speed and agility. Ankle support. Antibacterial, anti- odour properties. Designed to increase your takedown and starting power. Sizes: S / M (size 36-41) - L / XL (42-47).