Diverse designs: These toys have a wide variety of designs, covering various animal images such as turtles, lobsters, dragons, crocodiles, frogs, and crabs, which can meet the preferences and interests of different people. Bright colors: The toys are made with bright and rich colors, such as green, yellow, red, and gold, which have strong visual appeal and are easy to attract people's attention, especially that of children. Material characteristics: They are usually made of special expanding materials. Before being soaked in water, they have a smaller volume and are easy to carry and store; after being soaked, they can gradually expand and become larger, presenting a realistic shape, which adds to the fun and surprise of playing. Interesting gameplay: Their unique expanding feature adds to the fun of playing. People can observe the process of the toys gradually getting larger in water, experience the novel sensation brought by the change, and also use the expanded toys for role-playing, decoration, etc.