The unique fibre structure of Tyvek security envelopes, developed by DuPont, is tear and water resistant for extra security during transit. The envelopes also feature an extra strong hot melt peel and seal closure and are lightweight to help keep postage costs down. These C5 envelopes measure 229 x 162mm and are 100% recyclable. This pack contains 100 envelopes.

Log in for prices and to order