Card Saver 1's are your best option for graded card submissions. They are the only card holder that is recommended by PSA and BGS by name. These are semi-rigid card holders that fit all standard sized trading cards and some over-sized cards. Card Saver 1's are sealed 50ct packages/200ct red boxes. They are archival safe and have been made exclusively by Cardboard Gold for over 25 years.
Card Saver 1 Trading Card Protectors - PSA-Approved Holder for Baseball, and Sports Cards - Easy Insertion & Removal - Card Sleeves, Binder, and Storage Box Compatible - Cardboard Gold : Sports & Outdoors
Top Loader vs. Card Saver: Battle of the Protectors
Pokemon Card Semi Rigid Sleeves - Card Collector
Card Saver 1 - Semi Rigid Card Holder for Graded Card Submittions - 50ct Pack (1) : : Office Products
Cardboard Gold Trading Cards in Games & Puzzles
Card Saver 1 by Cardboard Gold - PSA Recommended India
Semi-Rigid Card Holder #1
50 Card Saver 1 Cardboard Gold PSA Graded Card Saver 1 - 50 Ct Holders New
Card Saver 1 by Cardboard Gold - PSA Recommended Trading Card Holder for Baseball, and More - Semi-Rigid, Archival Safe, 50ct Pack - Fits Standard & Oversized Cards : Toys & Games
Pokemon TCG: Scarlet & Violet 151 Ultra-Premium Collection - Mew Playm