Iron Bark 80x130mm Envelope 120gsm is the perfect RSVP sized envelope and perfect for a smaller greetings or thank you card. Iron Bark is a warm, earthy, mid matt grey with a smooth finish and matches perfectly with the envelopes, paper and card in the Iron Bark range. Lick and stick to seal envelopes or use a damp sponge. 30% PCW Recycled. Laser & Inkjet compatible however we recommend testing our papers and envelopes with your printer first.