How to Protect Packages From Moisture

How to Protect Packages From Moisture

Use poly mailers or poly bags as a moisture barrier around the product. For high-risk shipments, add a silica gel desiccant pouch and seal the outer box with water-activated tape. Avoid kraft bubble mailers in humid climates — they absorb moisture.

Quick facts

In-stock SKUs 22
Total options 22
Price from $4.55
Price to $28.38
Average price $14.19
Materials poly, kraft, clear, white, corrugated, bubble, plastic, red
Strengths ECT-32
Mil thicknesses 2.0, 2.5
Pack quantities 25, 100, 500, 1000

In-stock options

When to use

  • Warehouse teams training new pick/pack staff.
  • DTC founders documenting a repeatable packing SOP.

Alternatives to consider

Also stocked

Frequently asked

Do kraft boxes handle humidity?

Unwaxed kraft loses strength quickly above 70% humidity. For tropical or coastal climates, use moisture-coated kraft or a poly liner inside the box.

What's a silica gel packet actually doing?

Silica gel absorbs ambient moisture inside a sealed enclosure. It's effective for shipments that spend days in humid cargo containers.

Should I use poly bags for every shipment?

No — unnecessary for dry-goods ecommerce. Poly-bag liners are a targeted solution for electronics, leather goods, and paper products in humid climates.

Water-activated vs acrylic tape for wet conditions?

Water-activated tape bonds into the fiber and holds better when damp. Acrylic tape peels cleanly if the box surface is wet.