3pcs Hand Braces, Silicone Wrist Finger Exerciser/grip Strength Trainer/handProduct Parameters: Material: Food grade silicone Weight: 12g/pc (0.42oz/pc) Size: 10 x 8 x 0.8 cm / 3.93 x 3.14 x 0.32 inch.Three Tiers: With three different levels of force meet more needs - Small Force (3kg/6.6LB): Light green and light gray Medium Strength (4kg/8.8LB): Green and dark gray High Strength (5kg/11LB): Dark green and black Each Puchase with three different strengths.Premuim Quality and Reusable: Food grade silicone made, safe and durable, not easy to tear It is washable so can be used frequently and comfortably.Miti-functional: Strengthen your wrists, improve your finger dexterity, and increase the force your hands can apply while reducing fatigue.Note: This product is made of silicone, so please keep the fire going It's small enough for you to use it while walking, traveling (car, plane, bus), office, school, watching the television or any other place where you want to exercise. .