The Aimoh #6 3/4 Security Tinted Self-Seal Envelopes are a practical and secure option for sending letters and other documents. With a size of 3-5/8 x 6-3/4 inches, these white envelopes are made of durable paper material. The self-seal closure ensures that the contents remain confidential while in transit. This 300-count pack is ideal for businesses and industrial use, providing a reliable and efficient way to handle sensitive information.