Partners Brand 9621 Easy-Fold Mailers Kraft PK50

Easy-Fold Mailers for Shipping

Partners Brand 9621 Easy-Fold Mailers come in a kraft finish and a pack of 50. They are designed for businesses and individuals who need a simple way to pack and ship flat or moderately thick items. The self-folding design reduces packing time and does not require tape or glue. Each mailer arrives flat and assembles in seconds.

Upgrade from Plain Envelopes

These mailers replace standard padded envelopes or flat poly bags when the contents need more structure and edge protection. The rigid kraft walls resist crushing better than flexible mailers, making the switch worthwhile for books, catalogues, boxed electronics or multiple documents. They also present a cleaner, professional appearance for customer-facing shipments.

Limits of the Kraft Construction

The single-wall kraft material is not waterproof and will absorb moisture if left in rain or high humidity. It offers no built-in cushioning, so fragile items still need internal wrap or filler. The fixed 2-inch depth cannot expand for bulky objects, and the paper surface can tear under sharp, heavy loads. For liquid-sensitive or very heavy goods, a corrugated box is the appropriate alternative.