Ultra PRO's standard Soft Trading Card Sleeves use non-PVC, acid-free polypropylene film to protect your valuable trading and game cards from dust, dirt, and natural oils. These sleeves are designed to fit standard size (2-1/2" X 3-1/2") cards up to 35 points in thickness, and also help prevent surface scratches during sorting, display, or gameplay. With archival safe materials, your cards will stay in top condition for years to come.