Blake Purely Packaging 260 x 220 130 mm One Touch Postal Box Peel & Seal Tamper Evident Plastic Free (PEB33) Brown Kraft Pack of 20

Amazon

Make a difference to your mail with these One- Touch Postal Boxes by Blake! Super easy to assemble Peel & seal strip for secure sealing and rip strip, tamper evident opening No mess, no fuss, no extra packing tape needed!, Manufacturer: Blake Envelopes

Zoro Tools

Easy to assemble postal boxes, with an auto-lock base to take the fuss out of sending items in the post. With secure sealing features this is the perfect solution to send parcels quickly and efficiently in one simple step.