Judo Grip Trainer, MOSKITO Uchi Komi TrianglenGrip strength plays a key role for Judo and Jiu Jitsu. The Judo Grip Trainer by Moskito helps you to achieve a significant strengthening of the grip power and forearm muscles. Effective training increases wrist strength, pinching, finger strength and support grip. Made of tight judo gi farbic (930 g /m2)