Serious about protecting your card collection? These BCW semi-rigid holders are a must-have, especially if you're planning to submit cards for professional grading. They're made from 9 mil PVC that's crystal clear and free of chemicals that could damage your cards over time. Each holder fits standard-sized trading cards (think baseball, Pokémon, etc.) and even thicker memorabilia inserts. The semi-rigid design offers more protection than a soft sleeve but is still slim enough to fit into submission boxes for PSA, BGS, or SGC. This pack comes with a whopping 2000 holders, so you've got plenty to organize a large collection or prep multiple submissions. They're also handy for storing important small documents like certificates or vaccination cards. Trusted by collectors for a reason—they do the job well without breaking the bank.