What penny sleeves are recommended for sports cards? What's the difference between inner sleeves and penny sleeves for Trading Cards? Standard Card Sleeves Penny Sleeves TCG Protectors Penny Sleeves For Trading Cards Ultra Pro Antimicrobial Clear Penny Sleeves (100 Pack) Standard Size, 35 Pt Should I penny sleeve my cards before I put them in magnetic card holders? Found these holders on Amazon and was wondering if they were any good? : r sportscards Amazon.com: Penny Sleeves for Trading Cards 3,000 Count 2 5 8" x 3 5 8" (67mm x 92mm) Clear Trading Card Sleeves for Baseball, Football, Basketball, Soccer, Pokemon, and MTG Collection : Toys & Games