Black String and Washer Gusset Envelopes

Product Code: SW220B-G ISBN: 8435605323841
From £1.04 (inc vat)

Premium 180gsm Material

Smooth Wove Finish

Unique String Closure

High End Mailing Essential

25mm Gusset Expansion

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Our black string & washer envelopes are the perfect high-end mailing essentials for internal and event communications. Crafted from premium luxury 180gsm material, these unique envelopes come with an additional 25mm of expansion when extra capacity is required for bulkier items. Both sustainable and reusable, these string and washer envelopes are a great eco-friendly solution to your premium envelope needs.

What does 'Gusset' mean?

A gusset refers to the expandable sides of an envelope, designed to accommodate bulkier or thicker contents. Unlike standard flat envelopes, our string and washer gusset envelopes feature 25mm pleated V-shaped sides, allowing them to expand and securely hold items such as booklets, catalogs, or multiple documents with ease.

Hear from Our Customers

See why we’re trusted as the UK’s go-to for packaging and envelopes from verified Trustpilot reviews.

Gillian D
Site was really easy to use, even for a small order. My boxes arrived quickly, were very well packaged, and easy to construct. Absolutely delighted!
Valentine
Had to swap envelope types and support sorted it all the same day. Delivery was quick too. Great experience — would recommend.
Richard
Was unsure how to assemble my cartons, and they sent me a personalised video tutorial. Exceptional support!
Emma Mills-Green
Brilliant customer service and the biodegradable bags are excellent quality. Super speedy delivery too. Highly recommended!
Leanne
There was a misunderstanding with my order, but the team resolved it quickly and professionally. Very happy with the service!