GoSecure Size D1 Surf Paper Mailer 180mmx265mm White (200 Pack) SURFD1

Amazon

Surf all paper mailers Made of paper inside and out Corrugated paper lining 100% recyclable Same level of protection as bubble-lined mailers Tear resistant Size: D1 (180 mm x 265 mm) Colour: White Pack of 200

Euroffice

Offering even more protection than traditional bubble-lined envelopes, these Envelopes are made of paper inside and out. These Envelopes feature a honeycomb paper layer between kraft paper layers.