Explore 6x9 poly mailers for US small sellers. These mail-ready envelopes deliver lightweight, waterproof, and tear-resistant packaging solutions with strong seams, secure self-sealing, and opaque privacy. Keep shipping simple and reduce costs with cost-effective packs sized for jewelry, cosmetics, phone cases, postcards, and other small items.
3 products
A 6x9 poly mailer is 6 in x 9 in, which is approximately 15.2 cm x 22.9 cm (W x L).
A 6x9 poly mailer is best for small, low profile SKUs in a typical pick and pack workflow, like socks, underwear, intimates, baby clothes, lightweight tees, small accessories, and soft goods with minimal bulk.
Sometimes, the ability to fit depends on the shirt's size, fabric weight, and the way it is folded for packing. A single youth tee or a thin adult tee can fit if folded compactly, but many adult sizes (especially thicker cotton or larger sizes) will be a tight seal at the flap. For fewer exceptions in fulfillment, many sellers step up to a 9x12 poly mailer for standard adult T-shirts.
In most e-commerce shipments, a 6x9 poly mailer fits small apparel and single-item soft goods orders, such as 1 to 2 pairs of socks, 1 to 2 underwear, bralettes and intimates, baby onesies, lightweight scarves, beanies, or a compact folded tee. Multi-packs, bulky knits, and structured items usually need a larger mailer to avoid overstuffing and seal failures.
Yes. 6x9 is a common, standard run size that many packaging suppliers stock because it covers high-volume small SKU shipments.
