Uline Logo Mailer Guide

Use this guide to determine the right size mailer.

Determining the Width of Your Mailer

Width of the product + thickness of product + 1/2"

Determining the Inside Length of Your Mailer

Length of product + thickness of product + 2"

Helpful Hints

Thicker products require larger mailers. Use this calculator to help find the right size for you. Enter your product dimensions:


Mailer Properties

These characteristics can be helpful when determining which mailer is right for you.

1. Uline Bubble Mailers

  • Lightweight – Save on postage costs
  • Seamless bottom construction and smooth side seams
  • Self-seal
  • Kraft or white
Uline Bubble Mailers

2. Uline Padded Mailers

  • When extra padding is needed – Semi-rugged products
  • Easy open tear strip. Padded with shredded paper.
  • Self-seal
  • Gold, kraft or white
Uline Padded Mailers

3. Uline Poly Mailers

  • Lightweight. Tear and water resistant.
  • Often used to ship clothing and prescriptions
  • 3 mil - Industry standard: 2.5 mil
  • Self-seal
  • Bright white with silver tint lining – No show through
Uline Poly Mailer

4. Stayflats

  • For photos, posters, diplomas. Gusseted and side loading available.
  • Stiff fiberboard prevents bending
  • Self-seal or tab locking
  • Kraft, white or black
Stay Flats™

5. Tyvek® Envelopes

  • Tear-proof mailer. Tyvek material is ten times stronger than paper.
  • Flat and expandable. First class available in select sizes.
  • Self-seal
  • White or select sizes available in yellow, green, red, black or silver.
Tyvek® Envelopes
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