Amandir 5 Pack Hand Therapy Tqueeze Relief Squishy Stress Ball Hand Strengthener Ball Soft Gel Stress Balls Hand Exercise Grip Ball DESCRIPTION: These squishy stress ball in three levels of progression: 15 lb(yellow), 20 lb(orange), 25 lb(red), 30 lb(blue) and 35 lb(green) resistance, which can help you focus on, relieve stress and train hands and wrists. SIZE AND COLOR: One size: 50*35*40cm. Our squeeze ball suits for most people. And also, these are 5 colors you can get in one set. The squeeze balls are manufactured using silicone material; they are hypoallergenic, non-toxic. FEATURES: Hand therapy balls can strengthen your hands, forearms, fingers with simple exercises and relieve the pressures of daily life. Scroll down for grip exercise ideas! Always consult with your physician before beginning any exercise program for rehabilitation purposes. SUITABLE FOR: The three resistance levels are suitable for most people; also makes hand exercise ball a perfect tool for anyone in the family to use and great for progressive training. While walking, traveling (car, airplane, bus), in office, school, watching TV or any place you want to exercise. PROMISE: If you are not satisfied with our stress relief balls, please contact us any time, we will get you back as soon as we can and try our best to make things right!