Attach the Riff Trainer to your fingers. Warm up and play your favorite scales, solos, and songs. As you get used to it, feel your fingers glide across the fretboard or piano keys. Perfect for finger speed training for bass, guitar, piano, banjo, all stringed instruments, brass instruments, and woodwind instruments. Enhance your finger strength with this grip trainer. With the Riff Trainer, anyone, regardless of skill level, can quickly become a great musician. The Riff Trainer, which helps musicians eager to improve speed and strength achieve results faster, is made of high-quality, premium injection-molded silicone material for durability, flexibility, and comfort. Our unique design fits most hand sizes. With an ergonomic design, it's suitable for both men and women, the elderly, and children. It is highly suitable for sports enthusiasts (tennis, basketball, boxing, rock climbing, golf, shooting, etc.) and musical instrument players (guitar, bass, piano, violin, etc.), those undergoing rehabilitation, and those who lack exercise. Furthermore, it is also very helpful for relieving stress for office workers. Anyone can easily train their hand and finger strength.