Clasp Envelopes 10in x 13in Brown Kraft Box of 100 - Durable Mailers

In this review of the clasp envelopes 10in x 13in, the bottom line is simple: these are practical, reusable mailers for everyday office, filing and storage tasks. The reviewer found the reinforced metal clasp and fully-gummed flap make them a dependable choice for documents that need temporary or semi-permanent sealing. With 20% postconsumer recycled content and a box of 100, they suit teams that handle frequent interoffice transfers, archived paperwork, or light mailing where durability and reuse are valued.

Key Features

• Reinforced clasp closure: The metal clasp and reinforced eyelet keep contents secure and allow the envelope to be opened and closed repeatedly without tearing.
• Fully-gummed seal flap: For permanent sealing when needed, the gummed flap provides a conventional adhesive closure after moistening.
• Durable 28-lb kraft: The heavier 28-lb brown kraft stock resists bending and protects documents during handling and short shipments.
• Reusable design: Combination of clasp and eyelet supports repeated use, saving money and reducing waste compared with single-use mailers.
• Recycled content: The paper contains 20% postconsumer fibers, offering a modest environmental benefit for routine office use.
• Box quantity: Supplied in a box of 100, the pack is convenient for offices that go through envelopes regularly and want consistent stock.

Who It's For

These clasp envelopes are well suited to small businesses, legal or accounting offices, and schools that need reliable document transport between departments. They work best for internal mail, file transfers, invoices, contracts and archived paperwork where the ability to reseal is useful.

Shoppers who need padded protection for fragile items or weatherproof mailing should look elsewhere, as these kraft envelopes are intended for paper documents and light handling rather than heavy freight or outdoor transit.

Pros & Cons

Pros

• Sturdy 28-lb kraft provides good protection for documents against creasing.
• Reinforced metal clasp and eyelet enable repeated opening and closing without damage.
• Contains 20% postconsumer recycled fibers, which reduces virgin paper use.
• Box of 100 ensures a steady supply for busy offices and reduces frequent reordering.

Cons

• Not padded or weatherproof, so not ideal for fragile items or long-distance exposed mailing.

Specifications

Product type	Clasp envelope
Size	10 in x 13 in
Paper weight	28 lb
Color	Brown kraft
Recycled content	20% postconsumer fibers
Closure	Reinforced metal clasp and fully-gummed seal flap
Quantity	Box of 100

Our Verdict

The clasp envelopes 10in x 13in offer practical durability and reusability for offices that handle documents daily. They are good value for teams needing secure, resealable mailers with modest recycled content, though anyone requiring padding or weather resistance should choose a different mailer.

Frequently Asked Questions

Are these envelopes reusable?
Yes, the reinforced metal clasp and eyelet allow the envelope to be opened and closed multiple times for reuse.

Can these be used for permanent mailing?
Yes, the fully-gummed flap can be moistened and sealed for permanent closure when needed.

How much recycled content is in the paper?
The kraft paper contains about 20% postconsumer recycled fibers.