# Excessive dry ice — domestic air (over 5 lbs) — Postal shipping restrictions by item category

For Excessive dry ice, item category is Excessive dry ice — domestic air (over 5 lbs); carrier is USPS; restriction type is prohibited; scope is domestic mail via air transportation; conditions is Dry ice exceeding 5 pounds per mailpiece is prohibited from air transport in domestic mail, recorded from its source on 2026-08-04.

- **Item category:** Excessive dry ice — domestic air (over 5 lbs)
- **Carrier:** USPS _(our reading, not quoted from the source)_
- **Restriction type:** prohibited _(our reading, not quoted from the source)_
- **Scope:** domestic mail via air transportation _(our reading, not quoted from the source)_
- **Conditions:** Dry ice exceeding 5 pounds per mailpiece is prohibited from air transport in domestic mail

## What the source says

> Excessive Dry Ice: Dry ice exceeding 5 pounds per mailpiece is prohibited from air transport in domestic mail.

## Source

- https://pe.usps.com/text/pub52/pub52c3_028.htm

Last verified: 2026-08-04. Review by: 2027-08-04.
Part of [Postal shipping restrictions by item category](https://referencesource.org/shipping-restrictions-by-class/).