Surf All Paper Padded Mailing Envelopes Size K(7) 100% Recyclable Internal Size 350mm x 470mm Brown (Box 100) - SURFK7KReduce your plastic use by switching to Surf all paper mailers. With a protective lining made of corrugated paper, they're just as strong as bubble mailers but better for the planet. Our brown Kraft paper Surf mailers are made of recycled material and are 100% recyclable. They can be popped into household recycling bins with no need to separate any materials. Padded Surf envelopes are perfect for protecting products in the post!Surf All Paper Padded