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Premium Secure synthetic envelopes: a range of commercial white envelopes made from polyethylene fibres, a light and yet strong, durable material which is virtually indestructible.
These envelopes are incredibly tough: tear, burst and water resistant - perfect for sending heavy documents or items with awkward shapes, great for keeping important documents.
Premium Secure synthetic envelopes, all with peal and seal closure, are available in an assortment of sizes, including with expandable seams (gusset type).