Nature envelopes from Elco satisfy both the highest demand of environmental protection and the desire to have a highly finished product. All three types of envelopes – ELCO proclima, ELCO profutura and ELCO sycling – recommend themselves by their distinctive style and maximum environmental friendliness. All envelopes in this collection are available on demand within 24 hours from our warehouse.\n\nELCO sycling envelopes offer all the advantages of a high-quality envelope and are made of 100% recycled paper.\n\n100% recycled, grey\n- Excellent opaqueness\n- Window made of Pergamin paper\n- Available with an Optifix peel and seal flap and Optimail gummed flap