PVC is a kind of plastic material, which has the characteristics of corrosion resistance, waterproof and wear resistance, and is often used to make waterproof materials and clothes. PVC launching pants are usually made of PVC, which has good waterproof performance and is suitable for use in water, such as swimming and diving. Nylon is a kind of synthetic fiber material, which has the characteristics of portability, wear resistance and quick drying, and is often used to make outdoor sportswear and swimsuits. Nylon launching pants are made of nylon, which are light and comfortable, quick-drying and breathable, and are suitable for activities in water. Therefore, PVC launching pants pay more attention to waterproof performance, while nylon launching pants pay more attention to comfort and breathability.