GoSecure Size D1 Surf Kraft Paper Mailer 180mm x 265mm (200 Pack)

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 (180mm x 265mm) Colour: Brown 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.