10 x 13 Sea Blue Clasp Catalog Envelopes - Bulk 500 pack

In this review of the JAM Paper 10 x 13 Sea Blue Open End Catalog Envelopes, the bottom line is simple: these envelopes are for offices and small businesses that need a bright, large mailing envelope in bulk. The most compelling reason to buy is the combination of a bold color and practical closures - the metal clasp plus optional gummed flap provides two closure choices that suit document mailing and temporary storage. The review focuses on real-world handling, durability, and whether the pack size and color make them a good fit for routine office use.

Key Features

• Color and visibility: The brite hue sea blue finish makes mailed documents stand out, useful for promotions and urgent delivery so envelopes are noticed at a glance.
• Large capacity: At 10 x 13 in these envelopes easily hold standard and slightly larger sheets without folding, which simplifies sending catalogs or multiple-page packets.
• Dual closure options: A commercial metal clasp is paired with an optional moisture-activated gum flap so users can choose quick reuse or a more secure seal.
• Bulk quantity: The box contains 500 envelopes, which is cost-effective for businesses that mail frequently and want consistent color and size across shipments.
• Recycled paper: Made from 30% recycled, smooth 24 lb paper, these envelopes balance a cleaner finish with modest environmental consideration.

Who It's For

These envelopes are best for small offices, schools, non-profits, and designers who send out catalogs, promotional packets, or multi-page invoices and want a bright, consistent appearance. The bulk box and open-end design suit teams that prepare frequent mailings and need an economical, recognizable envelope option.

Shoppers who require heavy-duty mailers for fragile items or who expect long-term archival storage should look elsewhere, as some users report the paper feels thinner than expected and clasps can loosen when bent. For heavy shipments or rigid protection, choose a heavier paper or padded mailer.

Pros & Cons

Pros

• Vivid sea blue color that enhances brand visibility and makes documents easy to identify.
• Generous 10 x 13 in size fits standard and oversized documents without folding.
• Metal clasp with optional gum closure offers flexible sealing methods for reuse or permanence.
• Bulk pack of 500 provides a lower per-envelope cost for frequent mailers.

Cons

• Paper is relatively thin for some tasks, so it can tear at the open end under rough handling.
• Some users report clasps can come off when envelopes are bent, reducing long-term durability.

Specifications

Brand	JAM Paper
Color	Brite Hue Sea Blue
Size	10 x 13 in
Paper weight	24 lb (smooth)
Recycled content	30% recycled
Closure	Metal clasp and moisture-activated gum flap
Quantity	500 per box

Our Verdict

For offices that need a bright, economical catalog envelope for routine document mailing, these 10 x 13 sea blue clasp envelopes are a sensible choice because of their size, dual closures, and bulk packaging. They offer clear visual impact and convenience, though buyers should be aware the paper is on the lighter side and clasps may not withstand rough bending. Overall, they represent good value when vibrant presentation and quantity matter more than heavy-duty protection.

Frequently Asked Questions

Are these envelopes reusable?
Yes, the metal clasp allows envelopes to be opened and closed multiple times, while the gummed flap can be moistened for a more permanent seal.

Will a folded brochure fit in a 10 x 13 envelope?
Yes, the 10 x 13 in size accommodates standard and slightly larger sheets; brochures can fit flat or with minimal folding depending on thickness.

Is the paper thick enough for heavy mailing?
The envelopes are made from 24 lb paper and are fine for documents, but some users report the material feels thin for heavy or rough handling, so use padded mailers for fragile items.