The Idena envelopes offer a reliable and environmentally friendly solution for sending letters and documents. The set includes 25 envelopes in DIN long format, which are perfect for standard letters. The envelopes are made from high-quality recycled paper with a weight of 75 g/m². By using recycled material, you actively contribute to resource conservation and make a positive impact on environmental protection. The envelopes come in an elegant gray tone that conveys a professional and modern appearance. They are windowless, allowing for maximum flexibility when addressing your letters. The self-adhesive closure ensures easy handling and saves time and effort when sealing the envelopes. A special feature of the Idena envelopes is the security slits. These ensure that the envelope remains undamaged when opened, keeping your documents securely protected. You can confidently send your confidential information and important papers. The envelopes are certified with the Blue Angel, a recognized environmental label that meets strict criteria for environmental compatibility and sustainability. With Idena envelopes, you choose an eco-conscious option for your office supplies.