Each box is stamped with the ECO-logo at the base and has the FSC®-logo stamped inside.
The FSC® mark guarantees that all materials come from an FSC® forest, where no more wood is cut down than the forest can reproduce. This means better protection of the animal and plant life, and all foresters have proper training, safety equipment and a decent wage.
PS: the envelopes, inserts and cards are made by yours truly 