Thinking about using a box or padded envelope? Why not use a lightweight yet robust Tyvek expander envelope instead? Available in a range of sizes, these envelopes side expanders open wide to accommodate heavy and bulky items. Expander envelopes not only save you postage costs, they also save you packing time. Just stuff and seal. You can do away with adhesive tape and string!

  • DuPont Tyvek is not a paper. It's a smooth, non-woven mesh of 100% high-density polyethylene fibres
  • Tyvek envelopes will run on standard insertion and Inkjet printing machines, without special equipment
  • Unlike paper, Tyvek will not absorb moisture and fall apart. Nor will it tear, burst, fray or puncture, it's strong and tough. It resists all these hazards making it the perfect solution for important mail and storage
  • Mailing packaging made from DuPont Tyvek can produce less waste, use less energy and emit less CO2 than cardboard or low density polyethylene used in similar conditions
DeliveryEstimated DeliveryCost
Express DeliveryOrder before 1pm for next day delivery*��5.99 Standard Delivery 3-5 days.


You can return your purchase within 14 days of receipt where it is unused and in its original packaging. There are some exceptions, for example with specific hygiene products or if a product has been personalised or is not in a resaleable condition.

Any conditions of return are clearly stated below. See our full returns policy here.

* UK mainland only

** Industrial Scotland includes postcodes AB, DD, DG, EH, FK, G, IV5, IV30, IV31, KA, KY, ML, PA (except PA36, PA38, PA40, PA50), PH1 to PH18, TD

*** Scottish Highlands and Islands, Northern Ireland, Isle of Man, Scilly Islands, Channel Islands