How to Ship Trading Cards
Trading cards ship in a rigid mailer, not a box: sleeve or toploader the card, seal it in a 2 mil reclosable bag, sandwich it between two chipboard pads, and send it in a 6×6" self-seal Stayflats Plus rigid mailer. Boxes only enter the picture for bulk lots too heavy to ship flat.
| Single raw or sleeved card | 3×4" bag + 6×6" rigid mailer |
| Card in a toploader | 3×5" bag + 6×6" or 6×8" mailer |
| Graded slab | 4×8 bubble mailer |
| Oversized card to 8×10 | 8.5×10.5" rigid mailer |
A 6x6" Stayflats Plus mailer covers singles and small stacks, the 6x8" and 7x9" puncture-resistant sizes cover toploaders and team sets, and an 8.5x10.5" rigid mailer with 8x10 chipboard pads covers oversized cards and flat lots. Bulk lots weighing more than a mailer can hold flat belong in a corrugated box, not an envelope.
Match the Mailer to the Shipment
A standard trading card measures 2.5 x 3.5". Every route below starts from that footprint and scales up. Sleeves and toploaders come from hobby suppliers; this guide covers the shipping layer.
| Shipment | Packaging route | Why it works |
|---|---|---|
| Single raw or sleeved card | 3x4" 2 mil bag, two 5x7 chipboard pads, 6x6" rigid mailer | The pads overhang the card on every side and the rigid mailer resists bending through sorting equipment. |
| Card in a toploader | 3x5" 2 mil bag, 6x6" or 6x8" rigid mailer | The bag keeps the toploader closed and clean; the puncture-resistant 6x8" adds margin for thicker holders. |
| Small stack or team set | 3x4" bags, pads top and bottom, 6x8" or 7x9" rigid mailer | Bagged sets stay in order and the larger puncture-resistant sizes take the extra thickness. |
| Graded slab | Slab in a 4x8 bubble mailer, or padded inside a 6x8" rigid mailer | The slab already resists bending, so the job shifts to impact cushioning and corner protection. |
| Oversized or memorabilia card up to 8x10 | 8.5x10.5" rigid mailer with two 8x10 chipboard pads | The pad pair spans the full card face and the mailer closes flat around it. |
| Bulk lot, several hundred cards or more | Bagged sets in a corrugated box with fill | Past a flat lot, weight and thickness exceed what any mailer holds safely. |
What You Need
Every link goes to the product page. Confirm current details there before ordering.
- 6x6" kraft self-seal Stayflats Plus mailers for singles and small stacks.
- 6x8" puncture-resistant Stayflats Plus mailers for toploaders and team sets.
- 7x9" puncture-resistant Stayflats Plus mailers for thicker sets and multi-card sales.
- 8.5x10.5" kraft rigid mailers (Jiffy Rigi Bag) for oversized cards and flat lots.
- 5x7 kraft chipboard pads as the stiffening sandwich around standard cards.
- 8x10 kraft chipboard pads for oversized cards and lot tops.
- 3x4" 2 mil reclosable bags for raw and sleeved standard cards.
- 3x5" 2 mil reclosable bags for cards in toploaders.
- 2x3" 2 mil reclosable bags for mini cards, tokens, and inserts smaller than the standard footprint.
- 4x8 kraft self-seal bubble mailers for graded slabs.
- 4" clear label protection tape to cover the address label against rain and scuffing.
The Minigrip bags carry a white block, so you can note the set and card number on the bag instead of writing near the card.
How to Pack Trading Cards, Step by Step
- Sleeve or toploader the card first if it has value. That layer protects the surface; nothing in the shipping layer should ever touch the card directly.
- Bag it. A raw or sleeved standard card goes in a 3x4" 2 mil bag, a toploader goes in a 3x5" bag, and mini cards or tokens go in a 2x3" bag. Press the air out and close the zipper.
- Sandwich the bagged card between two chipboard pads. Two 5x7 pads leave margin on all four sides of a standard card. Always use a pad on both faces; one pad only protects one direction of bend.
- Tape the pad edges together lightly so the card cannot slide out. Keep tape on chipboard only, never on the card, sleeve, or toploader.
- Slide the sandwich into the smallest rigid mailer it fits. Less room to move means fewer corner dings on arrival.
- Close the self-seal flap and check the seal along its full width.
- Apply the address label flat, then run a strip of 4" label protection tape over it. The tape is moisture-resistant, so the label survives wet handoffs and porch rain.
Sizes and Case Packs
| Product | Size | Notes | Case pack |
|---|---|---|---|
| Stayflats Plus mailer | 6x6" | Kraft, self-seal | 200 |
| Stayflats Plus mailer | 6x8" | Kraft, self-seal, puncture-resistant | 100 |
| Stayflats Plus mailer | 7x9" | Kraft, self-seal, puncture-resistant | 100 |
| Jiffy Rigi Bag rigid mailer | 8.5x10.5" | Kraft, self-seal | 250 |
| Chipboard pads | 5x7 | Kraft stiffeners, pair per card | 1,125 |
| Chipboard pads | 8x10 | Kraft stiffeners for oversized cards | 1,050 |
| Minigrip reclosable bag | 2x3" | 2 mil, clear, white block | 1,000 |
| Minigrip reclosable bag | 3x4" | 2 mil, clear, white block | 1,000 |
| Minigrip reclosable bag | 3x5" | 2 mil, clear, white block | 1,000 |
| Bubble mailer | 4x8 | Kraft, self-seal | 250 |
| Label protection tape | 4" x 110 yds | Clear, moisture-resistant | 18 rolls |
Dimensions and case packs above come from the product listings. Confirm current details on each product page before ordering.
Common Mistakes
- Shipping in a plain paper envelope. It has no stiffness, so the card rides through automated sorting rollers unprotected and often arrives creased.
- Using one chipboard pad instead of two. A single pad only blocks bending in one direction; the pair is what makes the sandwich rigid.
- Choosing an oversized mailer. A card that can slide inside the mailer picks up corner dings. Size the mailer to the pad sandwich, not the other way around.
- Taping the card, sleeve, or toploader directly. Adhesive residue is permanent on soft sleeves. Tape belongs on chipboard and on the outside of the mailer only.
- Leaving the address label bare. A smeared label is the most preventable way to lose a shipment; one strip of label protection tape covers it.
- Forcing a heavy lot into a rigid mailer. Mailers are built for flat contents. Once a lot has real weight and thickness, move it to a corrugated box with fill.
Freight Reality on Card-Shipping Supplies
Freight is the honest cost most packaging suppliers hide: on a small order, shipping the supplies to you can rival what the supplies themselves cost. The fix is to buy at case quantity. These items are case-packed by the hundreds or thousands, so one inbound freight charge spreads across every card you ship for months. The math on cost per cube and per unit is laid out in the packaging cost and cube index.
Related Packrift Paths
- Mailers and envelopes collection
- Bubble mailers collection
- Reclosable bags collection
- Poly bags collection
- Rigid mailers for shipping comic books
- Poly bag size chart
- Packaging tools hub
- Packaging cost and cube index
FAQ
What size rigid mailer do I need for a single trading card?
A 6x6" self-seal Stayflats Plus mailer fits a standard card sandwiched between two 5x7 chipboard pads, with no wasted room for the card to slide. The same setup handles small stacks.
Should I use a rigid mailer or a bubble mailer?
Rigid mailers stop bending, which is the main risk to raw and toploadered cards. Bubble mailers cushion impact, which is the main risk to graded slabs already in hard cases. Bubble alone does not stop a card from creasing.
What size poly bag fits a trading card?
A standard card measures 2.5 x 3.5", so a 3x4" 2 mil reclosable bag fits it raw or sleeved. A card in a toploader takes a 3x5" bag, and mini cards or tokens take a 2x3" bag.
How do I ship a bulk lot of trading cards?
Bag the cards in sets, protect the top and bottom of each stack with chipboard pads, and pack the lot in a corrugated box with fill so nothing shifts. Rigid mailers top out at flat lots; heavy lots need box walls.
Are 2 mil bags thick enough for trading cards?
Yes. The bag's job is surface and moisture protection for a very light item, and 2 mil handles that. Stiffness comes from the chipboard pads and the rigid mailer, not from the bag.