Product Description Size: 10CM * 8CM Color: gray Material: silicone Package content: 1 * clip 1. AM & Eacute; LINK GRIP FORCE AND FLEXIBILITY & Eacute; FINGERS This pre-tension trainer greatly improves strength and flexibility. of your fingers, hands, wrists and forearms, helps you & agrave; relieve stiffness or & agrave; prevent arthritis, relieves symptoms such as tendonitis. Effective physiotherapy and strength training, and release your stress, reduce hand fatigue. 2. QUALIT & Eacute; FIRST CLASS AND EXQUISITE CRAFTSMANSHIP Manufactured Made of high quality silicone, BPA free, comfortable feeling, ergonomic design makes our grip strength trainer closer to your palm, with excellent elasticity, no noise, resistance to grip tear, can be pressed, pulled. Suitable for office workers, athletes, climbers, musicians and physiotherapists. 3. EXCELLENT DESIGN AND PORTABILITY The surface with textured grooves which provide excellent adhesion, not easy to use. slip off when in use, and are perfect for adults, seniors, teens and children. The compact design makes our silicone grip brace very portable, either way. home, office, traveling, & agrave; the gym, & agrave; hotel, and start your training. anytime, anywhere. 4. PERFECT GIFT AND CUSTOMER FIRST This exercise machine & agrave; hand for strength is the most popular portable training kit and can be given as a free gift. your friends, family, colleagues and more. 5. Portable design The handle booster is very small and easy to use. carry and fits perfectly in your sports bag or your bag & agrave; hand. You can appeal & agrave; representatives on the road, in the office.