These envelopes are made of paper material, durable and lightweight. These envelopes are great for mailing private or business-related documents, card, brochures, and more. They protect your documents from damage or dropping. Features -Color:Black-Material:Paper-Size:22.00X11.00X0.10cm/8.65X4.32X0.04in -Made of mild paper materials, gentle and safe, with good texture, smooth to touch,decorative and unique. -The envelope is the perfect invitation envelope, also for thank you notes, holiday cards, greeting cards, etc. -Simple but chic, with smooth finish with comfortable hand feeling, leave a deep impression for receivers. -Reasonable size design makes it have a good adaptability and can put down most greeting cards. -It has a wide range of applications and can be used in graduation ceremonies, business events, wedding parties, etc. Package List20 x Envelopes