HERMA envelopes in DIN A4 format are made from 100% recycled paper and without harmful substances to the environment or health. Ideal for use in primary school, school, and university. These recycled paper envelopes are available in a wide range of vibrant colors. The sturdy material and solid finish naturally protect school notebooks, calculation notebooks, writing notebooks, and work documents. They feature a writing field on the front for manual labeling and labeling.