Penny Sleeves vs Toploaders vs Magnetic One-Touch

Holder	Best for	Notes
Penny sleeve	Every card worth keeping	Soft plastic, first layer; always sleeve before a toploader.
Toploader (rigid)	Cards worth a few dollars and up	Standard 35pt for base cards; thicker cards (patches, relics) need a thicker toploader. Match the card's point (pt) thickness, often printed on the card pack or listed by the manufacturer.
Semi-rigid (e.g., Card Saver I)	Submitting to graders	PSA asks for semi-rigid holders for submissions (PSA resources).
Magnetic one-touch	Display of high-value raw cards	Sized by pt thickness; too-big lets cards slide.

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