Protect your trading cards the smart way with the Hobby Armor Shell Mailer, designed by collectors who understand the needs of fellow collectors and sellers. This isn’t “just an envelope”—it’s a purpose-built shipping solution that combines efficiency, protection, and professionalism.
Flat-Glued Sides – Unlike normal envelopes, Shell Mailers are carefully designed with flat-glued edges that allow them to flow seamlessly through USPS sorting machines, minimizing the risk of delays or damage.
Perfect Dimensions – Measuring 7" x 4.35" and only 0.04" thick, they’re the ideal fit for cards in semi-rigid sleeves or toploaders. At less than 0.4 ounces each, they’re lightweight, cost-efficient, and USPS-compliant.
For best results and USPS compliance, we recommend this packing method:
Standard thickness card in a penny sleeve
Penny sleeve inside a semi-rigid sleeve or toploader
Insert into a Shell Mailer
When using toploaders, secure the top with a small piece of painter’s tape or place it inside a team bag to prevent the card from slipping out and getting damaged.
When packed this way, the envelope weighs about 0.8 ounces and stays flexible enough for USPS sorting machines. This ensures you can use the eBay Standard Envelope shipping program or even mail using a USPS Forever Stamp. We do not recommend adding extra items inside, as it can make the envelope too rigid for automated processing.
Non-Glossy Front Panel – The front panel has no varnish, making it perfect for direct ink printing or handwriting addresses. It also fits 4" x 6" thermal labels perfectly, streamlining your shipping process.
Vibrant Multi-Color Print – Each envelope features premium white cardboard with eye-catching designs that impress buyers and elevate your brand image.
Business Efficiency – Compatible with thermal printer labels and easy to handle in bulk, Shell Mailers help you ship faster and more professionally.
✔ Purpose-built design, not just a plain envelope
✔ Optimized for semi-rigid sleeves & toploaders
✔ USPS sorting machine–friendly
✔ Lightweight, compliant with Standard Envelope guidelines
✔ Professional look that enhances buyer experience
✔ Designed by collectors, for collectors
The Hobby Armor Shell Mailer is the ultimate balance of protection, efficiency, and professionalism—created specifically for trading card enthusiasts who expect more than just an envelope. Ship smarter, save money, and impress your buyers every time.
