Attributes

Brand	-
Category	Festive Supplies & Gifts / Cultural Creative Stamp Albums, Publications & Badges
Origin	-
Material	High-clarity OPP (Oriented Polypropylene)
Transparency	Crystal clear with anti-glare finish
Sealing Type	Self-adhesive peel-and-seal strip
Acid-Free	Yes, archival safe for long-term storage
Thickness	60 microns (durable yet flexible)
Moisture Resistance	Waterproof and dust-proof protection
Compatibility	Fits standard JP commemorative envelopes and postcards
Package Quantity	100 sleeves per pack
UV Protection	Blocks 98% of harmful UV rays
Usage	Ideal for philately collections and stamp albums

6 reviews

Anonymous

Mar 28, 2026

Rating: 5/5

Excellent moisture barrier

Living in a humid climate, I was worried about mold. These OPP bags provide an excellent seal against moisture, keeping my collection safe.

Anonymous

Mar 21, 2026

Rating: 5/5

Easy to use

I am new to stamp collecting, and these bags make it so easy to organize my finds. The peel-and-seal strip works perfectly every time.

Anonymous

Mar 18, 2026

Rating: 4/5

Great value for money

Very good quality for the price. The only reason I didn't give 5 stars is that the opening can be a tiny bit tight for thicker envelopes, but they stretch slightly.

Anonymous

Mar 14, 2026

Rating: 5/5

Crystal clear display

The anti-glare feature is a game changer. I can display my rare stamps in my album without any reflection obscuring the details.

Anonymous

Mar 05, 2026

Rating: 5/5

Archival quality confirmed

As a serious collector, I worry about acid damage. These are truly acid-free and have kept my commemorative postcards in pristine condition for months.

Anonymous

Mar 05, 2026

Rating: 5/5

Perfect fit for my Japanese stamps

These sleeves are exactly what I needed for my JP envelope collection. The clarity is amazing, and the adhesive seal is strong without damaging the paper.

5 FAQ

Q: Can I write on the sleeve with a permanent marker?

A: Yes, you can write on the surface with a permanent marker, but we recommend labeling the insert card instead to avoid any potential ink transfer over decades.

Q: Are these sleeves reusable if I open them?

A: While the OPP material is durable, the self-adhesive strip is designed for one-time sealing to ensure maximum security. We recommend careful placement before sealing.

Q: What is the shelf life of the adhesive?

A: When stored in a cool, dry place away from direct sunlight, the adhesive retains its effectiveness for over 10 years.

Q: Will these fit oversized commemorative envelopes?

A: These are designed for standard JP commemorative sizes. For oversized items, please check our 'Large Format' series in the store.

Q: Do these contain PVC?

A: No, these sleeves are made from OPP (Oriented Polypropylene) and are completely PVC-free, making them safe for long-term archival storage.

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