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 sizeMaterial: the juggling balls filled with plastic grains are made from PU material with no toxin, durable, soft and safe for you to playVibrant and eye-catching: the balls with bright colors can attract people's eyes, suit for most people to play, thus to enhance learning and thinking ability, they are also nice sandbags that won't hurt people when throwing sandbags at each otherNice 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 guestsLight 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