1. Ergonomic design, oval shape, comfortable grip, allows you to train two fingers at the same time for better results. 2. Optimal ventilation. The raised knobs effectively reduce contact between the skin and the ball. The central part is ventilated and breathable, preventing the palm from overheating. 3. The design with a toe separator effectively addresses adhesion problems caused by finger contractures in stroke patients and prevents joint erosion. 4. Suitable for finger exercises, the grip ball is compact (approximately 6.5 cm in diameter and 10 cm in length) and fits perfectly in the palm of your hand. 5. By squeezing the ball firmly, you will feel the pressure exerted on your fingers. After several squeezes, your palm will become slightly numb and warm, providing a pleasant sensation. The ball deforms under pressure and adapts to the shape of the palm, providing a beneficial effect for athletes' health and well-being. Note: The color of the item in the picture may differ slightly from the actual product due to lighting and monitor settings. A margin of error of +/- 1 to 3 cm is possible. Color: Yellow. Dimensions: 10 x 6.5 cm. Quantity: 2 pieces.