1. The storage bag should be made of nylon + polyethylene. This material is airtight, flexible, and durable. However, it is more expensive due to its higher cost.
2. The most common material for quilt storage bags in the market is PET + PE, which is a high-strength composite film. It is elastic and has good adhesion, but it is relatively brittle, so care should be taken during use to avoid damage.
