PostSafe Extra Strong Peel & Seal Polythene Envelopes

£5.09£39.45 Inc Tax

Postsafe EXTRASTRONG polythene envelopes are available in retail packs, P25M, P26M, P28M and P32M in smaller pack sizes which are ideal for CDU display.



Cheaper, light and stronger – PostSafe envelopes are ideal for any mail order, online or eBay business.

All our prices are inclusive of VAT
Quick Facts:

  • All envelopes have secure peel & seal closure
  • Available in clear with write on panel (P24 & P30)
  • White Opaque envelopes made from 100% polythene
  • Weatherproof, burst proof, tear and puncture resistant envelopes
  • Easy to write on surface
  • Accepts handwriting, stamps or franking
  • Saves on postage costs
  • Royal Mail approved “Pricing in Proportion sizes”
  • Clear envelopes made from 100% polythene
  • Recyclable envelopes


PostSafe polythene envelopes are manufactured to the highest quality standards in the UK. Polythene envelopes are strong, less expensive than paper envelopes and cardboard boxes, and the light weight reduces postage costs. All products are weatherproof, tear resistant, and 100% recyclable. The flexible structure wraps around contents and saves space – simple to use with peel and seal closure.
All our products are approved by Royal Mail.

Additional information


Clear with Panel, Opaque, UnPrinted

Envelope Size

165mm x 240mm, 240mm x 320mm, 335mm x 430mm, 400mm x 430mm, 440mm x 320mm, 460mm x 430mm, 595mm x 430mm, 600mm x 700mm, 850mm x 700mm

Quantity per Pack

10, 100, 20, 50