1. Lightweight: PS material is relatively lightweight, making it easy to lift and remove the lid from the cup without exerting too much pressure.

2. Flexible: The material is flexible enough to allow for easy pulling of the lid without the risk of breaking or cracking.

3. Smooth surface: PS material typically has a smooth surface, which further facilitates the process of pulling the lid off the cup.

4. Secure fit: Despite being easy to pull, PS material lids also offer a secure fit on the cup, ensuring that they stay in place during transport and storage.

5. User-friendly design: PS material lids are designed with user convenience in mind, featuring a tab or grip that makes it easy to pull the lid off without any hassle.

In conclusion, PS material plastic cup lids are a practical and user-friendly option for those looking for easy-to-use disposable cups. Their lightweight, flexibility, smooth surface, secure fit, and user-friendly design make them a popular choice for various applications.