The envelopes of the Eko Kraft series are made of specialised kraft paper. It is a two-layer ecological paper. The top layer consists of unbleached coniferous fibres, while the base layer consists of high-quality recycled fibres and unbleached virgin coniferous fibres. This ensures high quality, including excellent printability and high stiffness, and a very exclusive look. Perfect for special correspondence - invitations, greeting cards.