A graded card is sealed in a hard case, but that does not make it safe to drop in an envelope. A slab is thicker and more rigid than a raw card, its corners can take a hit, and the label is part of what the buyer paid for. Pack it like a collectible that must not move.
The short answer
- Put each slab in a sleeve or clear bag to protect the case and label from scuffs.
- Use a snug rigid box with cushioning and void fill. A bubble mailer with a cardboard sandwich is only a compromise for one low-value slab; a box is safer.
- Ship every slab with tracking. Add signature confirmation when the order’s value or marketplace rules call for it.
- Photograph the card and the packed parcel before sealing, then keep the receipt and proof of value.
Why slabs need different packing
A plain white envelope (PWE) is for thin paper mail, not a graded case. Slabs are rigid and bulky, and their edges can press through an envelope. USPS letter guidance lists a maximum thickness of 1/4 inch; treat a protected slab as a parcel instead of assuming it qualifies for stamp postage. Check USPS letter standards and current rates for the packed shipment.
A slab case can crack or chip if a corner takes a hard hit. If the box lets it rattle, the case can strike a wall repeatedly; pack so the slab stays still and cushioned.
The label is part of the item: it identifies the grading company, grade, and card details. A scratched label or damaged case makes the slab harder to inspect, so protect the whole case.
Supplies to keep on hand
- Slab sleeve or clear bag: keeps the plastic case from rubbing against bubble wrap, cardboard, or another slab.
- Bubble wrap: cushions the edges and face of the slab. Use enough to stop a bump from reaching the case directly, without forcing a tight parcel.
- Rigid cardboard box: the safest everyday choice for a collectible with a hard case. Choose one that fits the wrapped slab without crushing it.
- Void fill and packing tape: paper, air pillows, or more cushioning can stop movement. Use sturdy tape over the seams and corners.
For one low-value slab, a bubble mailer is a less-protective fallback: wrap the slab, sandwich it between cardboard larger than the case, secure the sandwich, and mail it. The mailer can still bend or take a concentrated hit. A rigid box with void fill is safer, especially for a valuable card.
Grading companies’ guides are mostly for raw cards sent for grading, not finished slabs being resold. PSA’s guide describes cardboard, padding, and a box; CGC’s instructions call for protective packing and a sturdy box. BGS’s instructions describe raw-card intake. The shared lesson is to protect the collectible and prevent movement.
How to pack one slab
Inspect and photograph it. Check the card, case edges, and label; document their condition before packing.
Cover the case. Use a sleeve or clear bag. Keep tape and adhesive away from the slab and label.
Cushion the slab. Wrap the face and corners in bubble wrap; tape the wrap, not the case.
Box it snugly. Add cushioning on every side so the slab cannot slide or take pressure.
Test for movement. Gently tilt the closed box. If anything shifts or rattles, add void fill.
Seal the parcel. Tape the seams and corners, apply a flat label, and photograph the closed box.
How to pack multiple slabs
Sleeve each slab, then stack them face-to-face with a soft protective layer between them. Bare cases should not rub, and the stack should not slide into the box wall. Keep the bundle aligned, cushion its outside, and use a rigid box with void fill on every side.
Test the closed box for movement and add protection if the slabs shift. If the parcel contains other collectibles, separate them so hard objects cannot press against a case or label.
Choose a tracked parcel service
For a graded slab, tracking should be the default. Ground Advantage is a practical parcel option; Priority Mail is the faster USPS service when its delivery commitment or packaging options fit. Compare the package and destination, and check current USPS rates before setting shipping charges.
USPS says domestic Ground Advantage and Priority Mail include up to $100 of insurance, provided the shipment has an applicable USPS Tracking barcode. Extra coverage may be available for more valuable slabs. Keep the mailing receipt and proof of value, and see USPS insurance and delivery services for current terms.
TCGplayer tracking, signature, and insurance
TCGplayer’s seller guidance recommends tracking for orders over $20. Its help pages differ slightly at the exact cutoff: one article says orders over $49.99 must include tracking and orders over $250 must use Signature Confirmation, while another says $49.99 or higher and $250 or more. Use the conservative inclusive cutoffs: tracking at $49.99 and signature at $250. For an expensive slab, add insurance that matches the value you can document, and use a carrier accepted by the marketplace.
These are minimums, not a reason to ship a slab without visibility. For an order where a loss would be painful to refund, consider additional coverage after checking current terms. Keep the order record, receipt, and proof of value together.
Take photos before sealing
Photograph the front and back of the slab, its label, the protective wrap, and the cushioned box before closing. Keep an image of the sealed parcel for your records. Photos do not replace tracking, insurance, or claim requirements, but they document condition and packing if a buyer reports damage.
Common slab-shipping mistakes
- Using a PWE. A slab is rigid and bulky; use parcel postage, not the raw-card envelope workflow.
- Relying on bubble wrap alone. A mailer can bend; a rigid box is safer for most slabs.
- Leaving room in the box. Fill voids and test for movement before sealing.
- Stacking bare cases or taping the label. Separate slabs and keep adhesive off the case.
- Skipping tracking or proof. Save the receipt, order record, and condition photos.
FAQ
Can I ship a graded card in a plain white envelope?
No. Treat a slab as a parcel, not a stamped PWE. Letter mail has size and thickness standards, so check current classification and rates for the packed item.
How should I pack one graded card?
Use a sleeve or bag, bubble wrap, and a snug rigid box with void fill. A bubble mailer with cardboard is a less-protective option for one low-value slab; a box is safer.
How do I pack multiple slabs together?
Sleeve each slab and stack them face-to-face with protection between them so they cannot rub. Cushion the bundle in a rigid box and fill open space to prevent shifting.
Should I use USPS Ground Advantage or Priority Mail?
Both are tracked parcel services. Ground Advantage is a practical option; Priority Mail is faster. Compare current rates and choose for the parcel, destination, and service commitment.
When do TCGplayer orders need tracking or signature?
TCGplayer recommends tracking over $20. One help page says tracking over $49.99 and signature over $250; another says $49.99 or more and $250 or more. Use the conservative inclusive cutoffs: tracking at $49.99 and signature at $250.