Duck Max Strength Poly Bubble Mailer #5 vs Staples EasyClose Poly Bubble Mailers #5

Both are #5 poly bubble mailers in 8-packs with peel-and-seal closures, so the basic job is the same. The Duck mailer is the gusseted, expandable one: its sides give when a boxy or thick item needs room, and its 4.9 rating from 82 owners backs the build. The Staples EasyClose is the flatter, conventional mailer with a much larger review base (4.7 from 356) and a stated 3/16-inch bubble layer. Buy Duck for bulky or odd-shaped contents; buy Staples for flat, standard shipments.

• Choose the Duck Max Strength if you mail boxy, thick or irregular items and want a mailer that expands instead of forcing you into a box with void fill.
• Choose the Staples EasyClose if your shipments are flat and standard and you want a plain, well-reviewed #5 mailer with a quick peel-and-seal strip.