1. Spandex swim cap: breathable, soft to the touch, and comfortable to wear. However, the waterproof performance is poor, making it more suitable for children to wear when playing with water, and the price is cheap.

2. Rubber swimming cap: It is waterproof and relatively hard, but when worn, it is very tight, the scalp feels stuffy, and there is also a red mark on the forehead. It is now less commonly used.

3. Silicone swim cap: It is currently the most common. Maximize the reduction of resistance in the design of the swimming cap. Not permeable, not prone to cracking, sticking, or aging deformation. The particle design inside the swimming cap has anti slip effect and is also comfortable to wear.

4. Nylon swimming cap: Comfortable and close fitting, with low resistance, can improve swimming speed; Good moisture absorption and dyeing properties, with alkali resistance and reduction resistance; Good rebound performance, able to return to its original state after multiple stretches.

5. Fabric swim cap: It is loose and comfortable, but not waterproof, which is not good for hair.