1. Classic tone--- Rhythm balls are sold in pairs with a perfect feel balanced weight ergonomic design comfortable grip and a crisp and pleasant sound when shaken. 2. Adjust the shoulder straps at will---1 pair of rhythm balls with braided climbing rope sturdy and durable not easy to break 5mm upgraded rope smooth and durable no lint small inside refreshing and pleasant vibration. 3. Plastic material----African rattle is durable exquisite workmanship and not easy to wear. Practical and harmless to the skin. 4. Easy to play---- Anyone can play rhythm ball regardless of skill level. Suitable for beginners to practice. 5. Wide range of application - Rhythm ball can be used for KTV parties concerts etc. Great entertainment and instruments to heat up the party atmosphere. Parameters: 5cm/2in diameter sphere 5mm/0.2in climbing rope Material: ABS + climbing rope + iron sand Color: blue+yellow black+white black+red Size: 19*5cm/7.5*2.in Gross weight: 350g Net weight: 120g Quantity: 4 balls in a box Packing size: 16*16*8cm/6.3*6.3*3.15in