This specially formulated thermo-plastic rubber egg is the modern solution for strengthening wrists, hands, forearms and fingers as well as increasing hand coordination. Simply squeeze the egg in any plane to target the required muscle. Ideal for players of all racquet sports and for rehabilitation and also a great anti-stress toy! Choice of three strengths Light, Medium, Strong Note: Colours may vary from those shown SPECIFICATION: Brand Fitness Mad Usage Home Use Condition Brand New