8.5x12 vs 9.5x12.5 Poly Mailers

Not sure which to pick? Use the Packaging Tools to get a recommendation.

Choose 8.5x12 when your item fits the 8.5x12 footprint. Choose 9.5x12.5 when your item needs more room in the 9.5x12.5 footprint.

8.5x12 options

• 12x8.5" Bubble Lined Poly Mailers 3/16" Cushioning - 25 Pack
  $15.04In stock
• 8.5x12" Bubble Lined Poly Mailers - Tear Proof Self Seal, Case of 100
  $30.77In stock
• 12 x 8.5" Kraft Self-Seal Padded Mailers #2 - Puncture Resistant, Case/100
  $50.58In stock
• 12 x 8.5" Kraft Self-Seal Padded Mailers #2 - Puncture Resistant, 25 Pack
  $28.26In stock
• 8.5x12 White Fiber Padded Self-Seal Mailers - Professional Protection, Case of 100
  $53.11In stock
• 8.5x12 Fiber Padded Self-Seal Mailers - White, 25 Pack
  $17.04In stock

9.5x12.5 options

• 9.5x12.5" White Tyvek¬Æ Self-Seal Envelopes - Tear & Moisture Resistant, Case of 100
  $48.44In stock
• 9.5x12.5" White Self-Seal Envelopes, 28lb Paper - Case of 500
  $118.45In stock
• 9.5x12.5" Kraft Gummed Envelopes 28lb - Secure Seal, Case of 500
  $126.42In stock
• 9.5x12.5" Kraft Clasp Envelopes 28lb Woven - Reusable, Case of 500
  $145.48In stock
• 9.5 x 12.5" Kraft Redi-Seal Envelopes - Press & Seal, 500/Case
  $175.86In stock

When to use

• Deciding between 8.5x12 and 9.5x12.5 for a new SKU or packaging refresh.
• Cost, protection, and throughput tradeoffs.

When not to use

• Edge cases where neither option fits — check the related guides.

Frequently asked