This set includes 5×9 ecru envelopes with brown liner, perfect for any business or personal use. The envelopes come in a pack of 150, making them ideal for large mailings. They are made of high-quality material, ensuring durability and protection for your documents. These envelopes are perfect for a variety of occasions, including graduation parties, weddings, and dinner parties. They are considered an envelope liner, but would still work great as a normal envelope as long as you use an adhesive to close the envelope!