Each set includes 10 pieces of juggling balls and 1 storage bag; each piece of juggling ball with 4 different colored surfaces, blue, yellow, red, green, each ball is 5 x 5 x 5cm in size Material: the juggling balls filled with plastic grains are made from PU material with no toxin, durable, soft and safe for you to play Vibrant and eye-catching: the balls with bright colors can attract peoples eyes, suit for most people to play, thus to enhance learning and thinking ability, they are also nice sandbags that wont hurt people when throwing sandbags at each other Nice party supply and nice gift: these balls are nice gift that cater to people preferences, and also nice party rewards or return gifts sending to your guests Light and portable: these juggling balls are so compact, light and portable that you can put them in your bag and take them out for use when you go out