Dimples Excel Squeeze Stress Balls for Hand, Finger and Grip Strengthening - Set of 3 Resistance AESTHETIC DESIGN: Egg shaped design 2.5" x 1.75" (6.3 x 4.4 cm) with a textured surface for a perfect fit in your hands. They are made of thermoplastic rubber (TPR) and they will keep their original shape after being repeatedly compressed. INCLUDES 3 THERAPY BALLS: Three resistance levels included: soft (yellow), medium (red) and firm (blue). Find the perfect resistance for your needs! SUITABLE FOR PEOPLE WITH DIFFERENT NEEDS: The three resistance levels also makes this a perfect tool for anyone in the family to use and great for progressive training. EFFECTIVE TRAINING: Strengthen your hands, forearms, fingers with simple exercises and relieve the pressures of daily life. SATISFACTION GUARANTEE: We take pride in delivering top quality products and are proud to offer our 90 day money back guarantee in case you are not 100% satisfied and wish to return the product for ANY reason. Order now for worry free shopping. The hand exercise balls are in <span class="a-text-bold">three levels of progression,</span> soft, medium and firm, helps you focus, relieve stress and and alleviating joint pain. Two color options - (yellow/orange) for Primary hand training, medium (red/green) for Intermediate hand training and (blue/black) for Advanced hand training It will be great distraction when you are feeling stressed, hostile, or depressed,conducive to good health physically and mentally. <span class="a-text-bold">Pinch:</span> Hold the ball between thumb and index finger, the Squeeze, Hold, Release and Repeat! <span class="a-text-bold">Squeeze:</span> Hold the ball between any two fingers, you can also Hold the ball in the palm of your hand to squeeze. <span class="a-text-bold">Palm Massage: </span>place the squishy ball in your open palm, use your thumb press the ball to reduce pain in the muscles. The package includes 3 balls which come in three different colors and varying resistances of soft, medium and firm for your specific needs and allowing you to gradually increase the difficulty of your training as your strength improves. The three resistance levels also makes this a perfect tool for anyone in the family, mom, dad and kids,to reduce stress and alleviate joint pain. Makes for a great gift! Made with thermoplastic rubber, durable and long-lasting in use. They will not break open after intense press. Each ball is 2.3&#034; in diameter,1.7&#034; high ,weighs 47g. Egg shaped for a comfortable fit in your hands. Ideal for people working for long hours on computers, playing musical instruments like keyboards, and Rehabilitation training for the elderly as well as Anti-stress itemfor office worker. If you do sports a lot such as tennis, football, gymnastics, golf, hockey, rugby, rowing, car racing, fishing and baseball, then (well, lucky you!! ) You can definitely benefit from this hand ball.