Material: Silicone Size: 7*7cm / 2.73"*2.73" Color: As shown 1. Made of high-quality silicone, it's eco-friendly, odorless, flexible, one lasting, and can be stretched repeatedly without losing its shape. It's safe, reliable, and suitable for long-term use. 2. Multiple resistance levels are designed to suit different training needs, allowing everyone from beginners to seasoned fitness professionals to find the right intensity for them. 3. The ergonomic ring structure fits the curve of your palm, providing a comfortable grip and effectively improving hand muscle strength and flexibility. 4. Lightweight and portable, it allows you to exercise your hands anytime, anywhere, whether in the office, gym, at home, or while traveling. 5. Versatile, it's suitable not only for hand strength training, but also for finger rehabilitation, hand relaxation massage, arthritis support, and other health and wellness activities. Package includes:4Piece Finger Trainer