

Gusset Mailers
Brand: EcoFlex
Closure: Peel & Seal
Our Gusset Paper Mailers are the perfect sustainable packaging solution for businesses looking for expandable, durable, and eco-friendly mailers. Made from strong 125 GSM brown paper, these mailers are 100% recyclable and designed to accommodate bulkier shipments. The expandable gusset allows for extra room, making them ideal for shipping fabrics, garments, small boxed items, and other bulky goods. Reduce your environmental footprint while ensuring secure delivery with our premium gusseted mailers.
Best Used For:
Fabrics, garments, small boxed products, and other bulky non-breakable items.
Sizes available
| Size (MM) Width x Height x Gusset | Weight (GSM) | Color – Brown (Recycled) | |
|---|---|---|---|
| Small | 300 x 370 x 80 | 125 | ✔ |
| Medium | 340 x 420 x 80 | 125 | ✔ |
| Large | 380 x 480 x 80 | 125 | ✔ |
| X-Large | 410 x 590 x 100 | 125 | ✔ |
Other E-Commerce Packaging Solutions
FAQ's
Gusset mailers are designed to ship bulky or multi-item contents such as catalogs, apparel, documents, product kits, and ecommerce orders. Their expandable side and bottom folds allow for extra capacity while maintaining a flat, professional appearance when sealed.
Gusset mailers come in various standard sizes such as 9” x 12” x 1”, 10” x 13” x 2”, and larger formats. Many suppliers also offer custom sizing options to fit specific product dimensions and branding needs.
Yes, many gusset mailers are made from recyclable kraft or paperboard materials. Some options are also available in FSC-certified or recycled paper for eco-conscious brands looking to reduce plastic usage in packaging.
Absolutely. Gusset mailers can be custom printed with your logo, brand colors, messaging, or promotional offers. This adds a professional touch to your packaging and enhances the unboxing experience for your customers.
At Capital Envelopes, we offer high quality, sustainable paper gusset mailers in a variety of popular sizes at very competitive prices. Contact us to get a free quote for your inquiry.






