JAM PAPER 10 x 13 Yellow Clasp Envelopes - Bulk 500 pack

In this review of the JAM PAPER 10 x 13 Yellow Open End Envelopes with clasp closure, the bottom line is simple: these are an affordable, colorful option for sending or organizing loose documents that need to stay flat. The pack of 500 envelopes is aimed at offices, schools, and shops that want a bright, consistent yellow envelope in a size that fits standard documents without folding. The single biggest reason to buy is the combination of bulk quantity and a commercial clasp plus optional gum closure that keeps papers secure while adding a distinctive color to mailings and internal filing.

Key Features

• Size 10 x 13 in: Large enough to hold standard and slightly larger documents flat so you avoid folding or creasing important sheets.
• Bulk quantity 500 per box: A full box provides stock for heavy use environments like mailrooms, schools, or promotional mailings without frequent reordering.
• Clasp closure with optional gum: Metal clasp offers reusable secure closure and the optional gum adds extra reinforcement when mailing is needed.
• 30% recycled 24 lb paper: Made from partially recycled fiber and durable 24 lb paper that balances economy with usable strength for daily handling.
• Bright yellow color: Vibrant shade improves visibility for filing and makes submissions or promotional materials stand out in a stack.

Who It's For

These envelopes are best for offices, educational settings, and small businesses that distribute documents or promotional materials in bulk and want a colorful, organized look. The 10 x 13 in size works well for reports, catalogs, and multiple-page packets that should arrive unfolded.

Customers needing heavy-duty mailing protection or thicker shipping envelopes should look elsewhere, as some users note the paper is relatively thin and the clasp can fail if the envelope is bent or overfilled. For light to moderate internal distribution and filing, however, these are a practical choice.

Pros & Cons

Pros

• Bright color improves visibility and branding for internal filing or promotional drops.
• Bulk 500 count keeps supply costs down for high-volume use.
• Reusable metal clasp plus optional gum closure offers flexible security options.
• Made with 30% recycled 24 lb paper, providing a modest eco advantage.

Cons

• Paper is on the thinner side, and some users report clasps may come loose when bent or overfilled.

Specifications

Brand	JAM PAPER
Size	10 x 13 in
Color	Yellow
Quantity	500 per box
Paper	30% recycled, 24 lb
Closure	Metal clasp with optional gum

Our Verdict

The JAM PAPER 10 x 13 Yellow clasp envelopes are a sensible value for anyone who needs many large, colorful envelopes for filing, distribution, or light mailing. They combine a useful clasp plus gum option and an eco-minded 30% recycled paper in a high-count box, but buyers expecting heavy postal protection should choose a sturdier mailer. For visible, budget-friendly document handling in bulk, these are a good fit.

Frequently Asked Questions

Are these envelopes made from recycled paper?
Yes, the paper contains 30% recycled material and is 24 lb weight.

Will a standard 8.5 x 11 in packet fit without folding?
Yes, the 10 x 13 in size accommodates standard 8.5 x 11 in documents without folding.

Do the clasps stay in place for mailing?
The metal clasp provides reusable closure and the optional gum helps, but some users report clasps can come loose if the envelope is bent or overfilled.