AstrivixDD 300-Pack Rigid Trading Card Mailers, 7 × 4.35 in

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Product guide

AstrivixDD 300-Pack Rigid Trading Card Mailers, 7 × 4.35 in

AstrivixDD rigid trading card mailers are listed in a 300-pack size and measure 7 × 4.35 inches. The listing describes cardstock construction, a self-seal adhesive closure and a tear tab, with a lightweight format intended for card shipments and 4 × 6 shipping labels.

At a glance

Listing says the envelopes fit semi-rigid holders and toploaders, and are intended for trading cards and photographs.
The self-sealing strip is described as fold-and-press, with no tape needed, and includes a pull tab for opening.
The listing describes a blank white exterior and a flat design intended to work with automated sorting equipment.

Price

$24.29Save 10%

Reference price: ~~$26.99~~

Price checked: Nov 12, 2026

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Pros and cons

Pros

The 300-piece pack suits frequent or higher-volume card shipping.
At a listed 7 × 4.35 inches, the format is designed for collectible cards and standard 4 × 6 shipping labels.
Self-sealing adhesive and an easy-tear tab can simplify packing and unpacking.

Cons

Customer feedback is mixed on rigidity and thickness, so buyers who need consistently stiff protection may want to assess this trade-off.

Technical specifications

13 specifications

Identity and materials
Brand	AstrivixDD
Material listed	Cardstock
Color	White
Shape	Rectangular

Dimensions and quantity
Dimensions	7"L x 4.35"W
Pack size	300 Pack
Number of items	300
Thickness	0.04"
Weight	under 0.4 oz

Closure and stated features
Closure type	Self-Seal
Additional features	Dust Resistant, Lightweight, Self-Adhesive Closure, Tamper Proof
Recommended uses	Mailing Photographs, Trading Card Shipments
Shipping label format accommodated	standard 4" x 6" shipping labels

What to know before buying

Listing details to confirm

The listing calls the mailers sturdy and rigid, but customer feedback is mixed on sturdiness and thickness, with some describing them as not very rigid and very thin. The listing also describes a white waterproof surface while identifying the material as cardstock. Treat these as listing claims rather than verified performance, and check fit for the card holder and protection needs.

Who is it for?

A good fit for

High-volume card sellers, breakers and shops needing a large supply of compact mailers.
Collectors shipping trading cards in semi-rigid holders or toploaders, subject to confirming fit.

Less suited to

Buyers who require a proven level of rigidity or impact protection beyond the listing's claims.
People mailing items that exceed the stated dimensions or need more room than a card mailer provides.

AstrivixDD 300-Pack Rigid Trading Card Mailers, 7 × 4.35 in · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.5 / 5 · 125 ratings

5 stars77%77%
4 stars11%11%
3 stars4%4%
2 stars5%5%
1 star3%3%

Customer feedback is positive about card use, adhesion and value, while sturdiness, quality and thickness draw mixed reactions. That matters because the listing positions these as rigid card protectors, yet they are only 0.04 inches thick and feedback differs on how stiff they feel. The aggregate ratings lean positive overall, but do not resolve whether the mailers will provide enough rigidity for a particular shipment.

Positive themes

Customers report that the mailers work well for cards.
Customers appreciate the adhesive and describe the value and quality positively.

Mixed feedback

Customer feedback differs on sturdiness and thickness, with both favorable and unfavorable impressions reported.

Frequently asked questions

How many mailers are in the pack?

The listing gives a pack size of 300 and also states 300 items.

What are the mailers made from?

Cardstock is listed as the material. The listing separately describes the surface as waterproof, but that performance claim is not independently established here.

Will these fit a toploader or semi-rigid holder?

The listing says they snugly fit both types. Check your holder and card dimensions against the mailer's listed 7 × 4.35-inch size before ordering.

Do they need tape to close?

The listing describes a self-sealing adhesive strip that closes by folding and pressing, with no tape needed.