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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

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

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

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

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.

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